... product for 2 games so far and it works great for sliding/playing infield
350851
I used this product for 2 games so far and it works great for sliding/playing infield.  I had teammates with bloody knees and legs after 2 games.  I recommend this product.
489486
Bought this because I wanted to play sports games with it. Specifically FIFA and Madden. But, this doesn't work with any EA Sports games :-(

Overall concept is good. It has extra battery power and feels good in the hands. I like it, I just wish I had the games to play with it.

Make sure you check the list of games it works with before you buy. There is currently about 30-40.
4080715
This little green monster is awesome for the price. I needed something to get my 11 year old son up to speed on hitting without totally crushing the bank account. And I sincerely feel this does the job. The balls are somewhat expensive,but its worth it considering your not gonna break anything. We use the SFT yellow balls mainly. As mentioned in prior reviews, it tends to start walking off target after so many pitches, but it only takes the ever so slightest adjustment to put it back on track. We run this thing at the 10 setting @ 46/50 ft. I have no idea how fast the balls are traveling, but you might want to move the machine closer up to the batter if you feel it isn't fast enough. Or, you can run the SFT white balls which do come out faster.

 It greatly helped my son. He can actually hit the ball now instead of striking out ;)
4718250
Here's a really quick review. MLBTS11 uses the same formula as MLBTS10, with a just a few (but MAJOR) updates. Of course, we have purely analog options for hitting, pitching, and fielding. My personal preference is to use analog control for hitting (which makes hitting infinitely more possible but also more fun and intuitive/engaging) and pitching (which is more fun, but also more challenging than simple button pitching) while leaving the fielding option as button control only. To me, this makes the game 100% stronger than its immediate predecessor. They also modified some of the in-game physics so a baseball hitting the outfield wall doesn't go bouncing away like its made of rubber. There are still frustratingly slow field-to-throw transitions for fielders, but this is minor really. Some of the Cooperstown and Minor League options are no longer available (very limited selection of Minor League fields to play at), but again these are minor. My biggest complaint is that, like previous iterations, almost every game has this inexplicable feeling of predetermination to it...like the outcome is already set and the computer adjusts its own play to achieve said outcome. Whether this means the computer giving you too many opportunities to win or breaking out of a scoreless rut to hit 4 HRs in the 9th, I'm often left wondering whether (like pro wrestling) each match is fixed. Who knows. All in all, this is the game I'd hoped MLBTS10 would have been.
3823643
Great product and highly recommend for softball and baseball applications. Daughter (12) wears it for softball--she is a slapper. Wanted something protective because she is running towards a ball traveling 50+ mph. She had been hit directly on her elbow with no problem because she was wearing this shield. Paid for itself because she wasn't hurt. Runs a litttle big but fully adjustable to fit her.
3579529
So far it's been great. My 7 YO is playing kid pitch for first time, is a bit undersized and the 27 inch bat is perfect.  He's a contact hitter and we have been working on his power this season. He has been breaking it in since we got it...and last night for his first time at bat with the B4, he sailed the ball into the outfield for a base hit.  Bat has some nice pop to it and I'm glad it's little league approved.  Bat came with a little dimple in the barrell, but I don't think it should affect the performance.  It has a 1 year warranty anyway.  Glad we purchased the B4!
1238022
This was purchased to protect an already injured leg while playing in the field, not for sliding.  It has worked out extremely well for that purpose, and supplies the extra needed confidence to play effectively and not worry about re-injury.

Would be nice if the band going around the leg above the knee was adjustable to help keep it from sliding down. This item works well for what I needed.
2359655
At first i couldn't get it to work but eventually after taking out the battery a few times it finally worked. Its a bit awkward at first. It works best with track ball faceing up. And when you click the buttons if you don't lift your finger off the ball you will move it(dont recommend for gaming). After not being used for a few minutes it hibernates, just click the button and it comes back on. Every once and awhile when im scolling it will activate the trackball scroller without me pressing down on the scroll button. Its not a english based company becuase the instructions are in bad english. I assume its cheap construct causing the glitches, but they don't bother me. Overall I like it because I can keep my wrist in any position comfortable for me.
4464699
I bought this for my son and he is happy with it for the most part. The sliding easel part does not work the way we thought. I'm not certain if his issue is that it does not offer a good enough angle, does not hold up well, or has issues with it staying in place. For this I docked one star. He is pleased overall with the fit and function of the unit.
1300052
My son (and his brother, sister, and friends) love this and have already gotten a lot of use out of it.  The pitches are not always consistent, but I do think it is helpful and makes playing more fun.
4190273
I play Game battles competitively and wanted to get a pair in hope to improve movement and accuracy. They work! Wow I can definitely see the difference between using them and not. I would recommend them In hope that they go down in price, because that is my only gripe. The price is high for two pieces of plastic, even if they do work well.
1659631
Regards:

This product had a good performance when I played Baseball, the material has a good adhesion at bat, which prevents the bat to slip.
I recommend this product, thank you very much.
2200016
REVIEW UPDATE on 7/3/2014:
I had returned the original device back to Amazon for a replacement and I had some issues synching the 2nd device to my phone. I emailed SwingTip and received a call later that day. The guy on the phone was very helpful and synched it to my phone in a few minutes and showed me how to reset the device in case it stops working again.
I am bumping it up another star because of the good customer service and overall it's a good product that has helped my game.

ORIGINAL REVIEW ON 6/12/2014:
I bought this a month ago to help fine tune my swing and find problems that I wasn't aware of. And for the first month it did just that. My swing has definitely improved a lot and for that reason I would recommend this. However, I just came from the practice range and after hitting about 15 shots, it stopped working. I can't get it to turn on...it's completely dead in the water. Also, for the past week, either the sensor or the app has been crashing a lot. It usually crashes once or twice a practice session.

Here's another thing that's annoying, the device does shift on the shaft when hitting balls. Sometimes the attachment just shifts a little, then I need to take off the sensor to realign it. Other times, the metal clamps pop open. I've used the included spacers, which definitely help with the shifting, but it doesn't help with keeping the attachment clamped tight.
3982246
It serves the purpose for what I bought it for Great stuff for playing clicks a super character oriented game
1819394
First, I agree with the other reviews that the bungee cords don't last long but you can rectify that problem by buying a 25-pack of 8" bungee cords with toggle balls by Keeper Performanance directly from Amazon for less than ten bucks.  The replacement cords are much more durable.  That said, the Pro Comebacker works just fine for the games in the backyard.  It is stable and will not tip over when my 50mph heater hits the net! With the multiple angles, you can use it for grounders, linedrives and even popups.  For the price, this is a very durable piece of equipment as it has been out in our backyard for at least a year with no signs of rust.  Again, don't expect much from the cords they give you.  But if you order the heavier duty replacement cords from amazon, I think you'll find this to be a good investment that works fine for you and your kids.
2366526
I bought this for my Girlfriend's kids and they seem to enjoy it.  Multiple gameplay modes and the magnets seem strong and durable. The playing field seem a little low quality, but for the game purposes it's plenty fine.
3675401
I was eager to get this for VR games and other games on phone... Well.... .... doesn't work for everything. There are games it does work for and when it works, it works greats! Very comfortable in the hands and if you dock your phone, it is easy to get lost in game.
I haven't used it much for VR, or much at all for that matter.. I'd like to see games build to the use of a remote for them too..