Decent Bang For The Buck BT Headset
343788
I bought this headset as a spare because I'm always misplacing my much more expensive Plantronics Edge BT headphone. As a result of owning both I'm in a position to compare and contrast both. First the design of the headset itself, this is almost a tie. Both are single-in-ear boom mic headsets, both are light weight and comfortable. The edge is a bit smaller and less obtrusive, but not enough smaller to bother me. The biggest difference is the design of the ear-tips and here the Mpow pulls way ahead. Plantronics uses circular buds that sit above and behind the ear canal, while Mpow uses a design that ducts sound directly into ear canal resulting in much higher volume. I temporarily swapped their tips and the Mpow's tips really improved the Edge's volume.

Sound (speaker), I found the Mpow's sound to be plenty loud but quite tinny, very understandable but not pleasant to listen to. Nowhere near as nice sounding as the Edge or any other BT that I've owned in the past several years. I'd rate the mic as fair but useable.

Charging stand, I really like the Mpow's charging stand. It has a small footprint and works well.

Accessories, I haven't found any. No replacement ear-tips, no extra charging stands, nothing.

So why am I rating the Mpow Knight Pro 4-stars? Because it offers an awful lot of bang for the buck.
4309021
The Quickcell mono bluetooth headset is light on your head and your wallet.  It works, and  that is almost surprising for a headset in this price range. The quality however is about what you would expect. It seems solidly enough built, but the audio quality is what I would describe as barely adequate (with static bad enough that s diffcult to hear quite frequently).

Pairing was fairly easy.  Hold and release the power and volume buttons to go into pairing mode. There are 2 indicator lights (red and blue) indicating that it is in mode. My phone needed to be turned off and on so that it was in search mode to pair.

The set has a multi-function button on the center of the ear piece to answer and end calls.  The device is simple and functional, light, easy to wear and use.  It does the job but does not have the sound quality of any other hands-free device I have tried.  At this price it is hard to complain.

It fits in a pocket and is good to have as a back up or for use in travel.  I rated it 3 stars because it does what it needs to but not much more, is a functional inexpensive device.

My son likely would have rated it higher as he thinks it looks like a piece of spy gear.
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Having lived with this for a while I am knocking it up a star, as my husband (a musician and audiophile) actually prefers this to my Sennheisers! His reasoning is unassailable and likely meaningful for most people considering this.  It is safer to use when driving as having a receiver on one ear means you can hear what is going on around you ore clearly.
 do not use my phone when I drive period. My hands-free devices are used when I am working at home, making it easier to take calls without dropping my work (hot glass which is not as easy to put down as other types of work ;) )

I came back to add this as I think it is an important consideration for those who do use a hands-free set while driving (which, I suspect, is how most people do use it).

In sum, despite its' failings (mainly auditory) it is small, inexpensive and a safer way to use a hands-free device while you drive.
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Revised to note that after less than 1 month of moderate to light use the ear piece fell of.  We are going to try to reattach it, but I suspect that most people would expect a device like this even an inexpensive one to hold up for more than 1 month! (It becomes awfully expensive if it needs to be replaced monthly!!) The star rating has been lowered accordingly.
993265
Sound quality isn't great and the bluetooth connectivity is a bit spotty, but these are fantastic Bluetooth headphones for the price. The lack of a micro-USB charging port (it's mini-usb) is regrettable, but since it included a cable, I don't mind. Unit is comfortable and fits my large head nicely.
1499621
Works well. However, if you wear eyeglasses, you may want to look for a BT headset with a different design
1049929
4/18/17 - I have had this headset for about a week now so I'd thought I would share my first impressions:
Pros:
-Cheap
-Decent sound
-Good battery life ( went days without charging )
-Can stay paired to multiple devices, switches between my headset and car fairly quickly

Cons:
-Pairing with android took a long time to set up, no matter what device I used it took about 3 minutes to find it. Paired instantly with any iphone I tried. ( Note that after the initial pairing it quickly connects so nothing too major )
-The rubber that touches your neck gets extremely dirty quickly and requires a lot of wiping down to keep them looking good.
-The only battery warning I heard on mine was 5-10 minutes before it died and it said "Recharge headset" and then shortly powered off. If the headset announced battery life when it was powered on it would be an easy fix instead of saying "phone 1 or phone 2 connected"

Not sure:
I am not sure how long these will last, the retraction mechanic is okay and you have to slow down the ear buds as they go back in or else it is too rough on them ( per the manual  ).

Overall:
I am happy with the purchase, the battery life on this headset is really quite good compared to some LG tones I had at one point (had one of the ear buds break). I would recommend this to anyone who listens to music all day in an office environment, with both earbuds in you cant hear anything ( just the way I like it )

5/18/18:
Still using the same headset, only issue is that the pairing button is not longer responsive. So it will no longer pair with my new phone D:  Other than that still sounds as great as they did day 1 and battery life is about the same
2193871
I have had more BT headsets than I care to remember or admit. (Jawbone$, Motorola, etc)
I finally found this Jabra unit and it hits the mark.
Pros:
-An actual VOLUME button that has and UP and DOWN. (No holding the one button that is supposed to do everything but never does what you want)
-A Power button that toggles on and off (Again no holding the one button that claims to do all. Was it 3 seconds? 5? A tap??)
-A "normal" charger that most people have anyways (Its micro USB and very common)
-I can actually hear the Caller
-The Caller can actually hear me
-The headset earbud "sort of" fits into your ear but its still COMFORTABLE without protruding so far in that its scraping the side of your brain. (Comfortable and I can hear well !)
-Good battery life
-Small LED indicator lights that tell you what the thing is doing (on, off, pairing, etc)
Cons:
-The thing isn't the most invisible headset you could wear but it works great and may stop people from thinking your just crazy and talking to yourself.

Also, not sure what other reviewers claimed but I definitely got all that was pictures. Instruction manual, windsocks and spare earbuds
4976819
I got this Bluetooth headset for free in exchange for my honest review. These are my own opinions and I wasn't compensated for my review.

First off, the setup wasn't as smooth as I expected. I was holding the pair button for 4 seconds but my phone was having a rough time connecting. After a few minutes, it was able to pair and worked perfectly. I haven't had a chance to play around with it much, aside from making a few calls, but I like it so far. The headset magnetizes nicely into the dock and the dock sticks well to any surface. I'm guessing the USB is for charging but I'm not sure how the headphone jack provides a different function. Maybe it can send audio to your stereo if you don't want to put the headset in your ear.

The headset doesn't fit very snugly in my ear, however. The rubber piece that's supposed to hold it in your ear isn't very big, so it really just feels like it's resting on your ear and could fall off if you move your head too much. Overall I like this device and it's nice for the times you want hands free calling and either don't already have Bluetooth in your car or you just want something up to your ear.
1423492
This is a good bluetooth earphone but there are 2 negative things I need to point out. The first thing is the volume level is not as high as I need it to be sometimes when there is road noise or anything else around you. If your surroundings are quiet you can hear what your listening to just fine. The second negative is the range is not as good as other bluetooth earphones I have owned but it is adequate.
  The positive things about this BT headset are that it pairs up easily and stays connected (as long as your within 10 feet) and it fits comfortably in my ear once you get used to it.
All in all I am very satisfied with this earphone and will continue using it and I would definitely recommend it if your on a budget and want a BT headphone, this one will get the job done no doubt.
2874866
It's a decent headset for the price. Good quality sound. The cab of my Freightliner is noisy during idle and quite noisy while in motion. This headset does a good job to cut through all the noise. It also works with Google on Android devices. Just press the BT button once and Google will listen for a command or question.

Charging is also at decent rate.

So yeah, not bad at all for the price!
801332
I was tired of the "ear bud" style of blue tooth headset. Some callers were complaining about being unable to hear me. So I started shopping for a "boom mike" style with over the ear speaker like this one, I was surprised at the low cost. Comparable to what I spent on my "ear bud" style Motorola. Sound quality is good. I feel more confident that my callers can hear me clearly. The unit did not have instructions but they were easily downloaded from the NoiseHush website. Was easy to pair to the phone. Was difficult to pair with my Windows 7 laptop, I was unable to get it to play audio through the headset. But worked well with my XP laptop and could set up the audio to play in the headset easily. My ear is a bit sore after a few hours of wear, but the unit is easily swapped to the other ear and the mike swivels easily to accomplish this. The methods for pairing to 2 devices and how to navigate that are a little difficult, I find it easier to just use for one device. For the cost of this unit i am very pleased. it does what i need for a low price.
3621330
Update 1:
Managed to get them working with almost unnoticeable delay, but will still have trouble if playing fast-paced twitch-shooters.
Update 2:
Definitely won't be using when playing competitive shooters - lag is enough to miss hearing a gunshot or three.  Still, a great headset for music, travel, and slower paced games.

--original review below--

After several other wireless headsets of various brands broke at the hinges I decided to branch out.  I had tried a friend's A50's and another friend's A38's.  Sound quality on both blew the previous headsets I'd used out of the water and since I wanted versatility I picked up the A38's.  Now, it could be the Bluetooth adapter that I have, or just Bluetooth in general, but when playing games or listening to music on either my computer or phone sound can cut out for a moment then come back with lag.  This happens about a third of the time (for me).  Also, doesn't seem I can use the microphone for VOIP while PC gaming when I use the high-quality audio setting.  Something I can work around in the future by picking up a standalone mic.

So far, I've found the pros to be:
As mentioned earlier, sound quality is great.
The noise-cancelling feature works well.
Comfortable enough for me
Long battery life
Long wireless range
Customizable tags
Versatile platform (PC, mobile)
Stylish enough to wear outside and not look ridiculous

Cons:
Can't use microphone with high-quality audio.
Variable Lag/delay from minor to noticeable (If this has something to do with my software hardware setup, I would appreciate help/tips.  I used a SoundBot SB340 adapter for my PC with both included BT, and again with Toshiba BT Stack.)
Couldn't use sound equalizer on PC to refine sound

Overall:  Happy with purchase - Great headset
Would love a more refined version dedicated to PC/Laptop gaming that doesn't use bluetooth.
2591126
So far it has worked great. The sound quality is really good and the mic seems to work well as well. The range and the signal consistency seems really good, I walked about 20 feet (2 walls) and it didn't drop and the sound quality was still good with no drops or static. The audio control buttons are big and easy to control compared to tiny little buttons on some other brands.
My gripes include the build quality, it's a little too plasticky, it almost feels like a toy. The comfort is so-so, maybe I need to break it in, but at the moment it's a little uncomfortable around my ears. The power on-off is tricky, you have to hold it down for 2 seconds to turn it on/off, but if you press it a little too long (4 secs) it will unpair from the dongle. I did this by accident a few times and got annoyed, but I'm more used to it now, so I don't hold it down too long.
Overall, I recommend this if you're looking for a wireless headset under $80. The minor gripes can be overlooked for the price and function.
2304749
After sorting by rating I landed on this one, which in my opinion is very good considering the price range. At first it sounded a bit thin, but after a while the sound turns "bouncy" and it's enjoyable to hear. The sound quality may not be the best, but it's quite decent given that it's wireless and I couldn't ask for more in this price. The headset is also comfortable to wear, the whole using experience is better than I expected. There is only one thing I'd like to mention: when the headphone is not playing audio, I could hear a very slight buzzing sound, not very noticeable though.
3116234
I didn't do a ton of research before ordering this - I just wanted something that I could pair with my phones, my PC and to be able to use with Skype and Cisco IP Communicator. This headset delivers.

The Good:
I'm not sure if all of the sellers of the headset include a nice case, but the ones I ordered did. It's a nice case, and the headset is collapsible. Mine didn't have an odd smell as others have reported. I like that the ear cusions are leatherette rather than foam. Sound is fine, charging is quick, buttons are large, headset is comfortable, pairing was easy, and it works with both Skype, Cisco IP Communicator, and everything else I threw at it. (Several different cell phones, YouTube vids, all using the Windows bluetooth stack - no dongle required).

The Bad:
It uses mini-USB to charge rather than Micro-USB. I really hate that... I assume I'm waiting for a newer version of the headset to come out that will use Micro-USB (maybe it's already out even). The sound quality of the mic isn't great I've been told - people on the other end of the line tell me I sound distant and slightly muffled. The plastic used on the ear pieces feels flimsy and cheap, but I haven't had breakage issues or anything, so it could just be an aesthetic preference.

Overall, you can't beat these for the price.
2542924
The Sony DR BT21G is a very good piece of technology for the price.  While there may be better,  more expensive headsets on the market,  this was about as high as I was personally willing to go for something with no swappable battery and intended for serious use.

I picked this up as part of a bundle with a Bluetooth Transmitter for my iPod,  and it is serviceable there.  The real shortcoming appears to be the transmitter,  which is not particularly strong.

This review is strictly about the Headphones,  however,  which are pretty close to excellent.

There are certain compromises purchasing headphones;  larger,  over the ear style ones are better but heavier.  Smaller,  in-the-ear style ones tend to provide less in terms of quality audio,  and are most likely worse for your ears in general.

These are  "street style,"  which may not contour to your head if you have a larger one.  Despite this short coming,  they probably provide the best balance between size and sound.  Clip-ons always fall off my hears,  and over the ear headphones block out too much noise when I am outside.  While I appreciate my music,  I appreciate not being run over much more.

The sound on these headphones is particularly good compared to a similar price range.  Use with a portable media device will depend on the transmitter;  while my iPod and transmitter struggle to broadcast from my pocket,  the headphones will receive music in fine quality from as much as 30 feet away (standard distance for a Class II Bluetooth device).  Similarly,  I can stream music from my PC anywhere in my apartment.

While I did not buy this primarily with phone usage in mind,  the unit's microphone is solid and the noise cancellation is some of the best I've used.  My friends usually cannot tell if I am at home or out on the streets,  barring heavy wind or a semi driving by.  Compared to the bluetooth earpieces I've used in the past,  the reception is stellar.  Not only do I no longer have to raise my voice,  I can speak in rather quiet tones.  This was a pleasant surprise,  considering this was not the reason I made my purchase.

Active Battery Life easily trumps eight hours new;  over time,  expect the batteries in a bluetooth unit will deteriorate,  and most cannot be replaced.  Expect two years of battery life from such a unit,  with some deterioration towards the end (depending on use).  Standby time is a little dodgier,  and extended time off the charger may limit usage.  If I charge the unit in the morning or overnight,  I can get a full day and change,  even with heavy use.  Unfortunately,  this appears to be the only way around the drain on the battery.

The headphones also support multiple devices at once.  For example,  you can run a music device and a phone through the same unit,  provided they support the right profiles.  I stream music with an A2DP profile through my iPod or PC while also using my mobile phone.  This can cause minor disruptions to the music,  however.  Interruptions are usually minimal.  The headset features controls for fast forward,  rewind,  play/pause,  volume,  and talk/end/voice dial for phones.  A compatible device can be controlled with only the headset,  meaning your phone or music player can be tucked away and still managed.

The features,  sound quality,  and reliability far outstrip any problem I have with the neckband.  If your head is larger than normal,  expect the earpieces to shift around,  and possibly discomfort if worn for several hours at a time.  When not in use,  I usually let them rest around my neck instead.

The type of headphones one uses is a personal choice,  but if you prefer the "street style" to clip-ons,  earbuds,  and studio/monitor style over-the-ear headphones,  this is a great device for the price.
2152750
While this headset is not going to win any awards for sterling stereo quality, and while it won't impress audiophiles, it is a functional set of headphones that should serve anyone looking for a pair of everyday use headphones/a mic. I've used these with my laptop, my phone, and my PS4 controller. I'm not fond of the square earphone shape, and the foam padding seems a bit thin and likely to tear or pull, but these are minor quibbles.
3831822
I'm a realist, so the 50% off discount price I received I wasn't expecting these Bluetooth Headphones to blow me away (and they didn't).
Don't get me wrong - They're about average, and maybe even a little above average, as far as packaging, design and portability go, but there are definitely some drawbacks at this price point:
1) Active Noise Cancelling Earphones:
The main reason I bought these - I work in Server Rooms and MDFs, so there can be extremely loud fan or "white" noise wherever I am.
The ANC muffles about 30-40% of the background noise at best, to the point that it only makes sense to use the headphones when I have music on, to assist with Noise Canceling.
2) Noise Canceling Bluetooth Microphone:
I use Jabber or Cisco Desk and Wireless Phones all day, but end users complain that they can barely hear me speak over the noise in the room.
When I use wired headsets / handsets directly connected to the phone, or even the built in Microphone on the Wi-Fi Phone I use at work, there are no problems with the end users' hearing of my voice.
Having said that, I also have a new pair of Bose QC35's in another MDF / More Noisy environment and their mic issue is similar, although the Bose ANC Earphones perform at 90%+ Noise Cancellation (as advertised and paid for - $350). I'm not expecting Bose quality for what I paid, though. I think an ANC BOOM (Gaming Headset Style) Microphone would work better, but Bluetooth does not provide great voice output quality in general - espescially when paired with Windows Products (Drivers are usually generic).
3) Battery Life:
When the ANC switch stays on with the Headphones, it holds a 2-3 hour consistent connection before it starts crackling / cutting out.
When I leave the desk / stray further than 20 feet from the pc / phone, returning to base results in degraded audio quality.
I have a similar (Non-ANC) Headphone set, which is only On-Ear (Skullcandy 2XL Barrel), which performs way better in terms of connectivity & Audio Quality, minus Noise Cancellation. They also have their own drivers on Windows devices, which seem to be better programmed that the Ausdom version.
4) Comfort / Ear Pad Vacuum (Seal against head):
The Ear pads don't seal well - I don't have large ears, but it seems if the pads had deeper cavities, it would do the job.
5) Volume:
The Volume on the ANC7 is lower than expected, even at Maximum, although music playback is decent - and acts as a second noice canceling layer.

Overall - Not bad at the discounted price point, and they should be fine in relatively quiet environments.
I would NOT pay full price, as there are obvious better choices out there at this price point.

Ausdom definitely has a lot of improving to do to beat market competition.