Good coffee cup warmer.
350735
It's a little larger than I though but it does heat up fast.  I'd suggest they make a similar model in a dark color.
4397301
I'm enjoying the simplicity of this coffee maker. The thermal craft keeps my coffee warm with out the cooking of the typical hot plate warmer.
3550587
Great price.  This coffee maker doesn't have the best thermal carafe on the market.  But this replacement carafe keeps the coffee much warmer than our old one did.  Delivery was prompt.
4687723
This is a very good product that plugs into a wall outlet, and it keeps my coffee at a nice warm temperature all day long. I've tried other USB port coffee warmers, and none had come close to the warmth this warmer heats up to. I highly recommend this warmer. The price is very reasonable too.

NOTE:
- The cord on my warmer is quite long.
- The on/off switch is only 3 inches away from the backside of the warmer, making it easy to reach.
- The warmer has a red on/off indicator light on the front which makes it very easy to tell if the unit is on or off.
- This warmer has a big heating surface. At least a 1/2 inch wider than a normal size coffee cup.
- The only negative issue about this warmer is that the ceramic surface gets pretty hot, but that's not much of a big deal for me, at least.

All-in-all, I'm very satisfied!
1096195
I bought this warmer hoping it would get hotter than a candle warmer and it does.  Keeps coffee perfectly hot.  I highly recommend it.
1297026
Quality is decent, it seems well constructed with quality materials.  The thermos keeps my coffee warm for many hours.  The top nozzle is plastic but does not seem to affect the flavor of the coffee and does an excellent job at keeping the heat in.  Hard to complain for the money, it's a darn good deal.
1176349
It works nice and a good cup of coffee the thermal carafe keeps coffee warm for 12 hours not piping hot but drinkable. The only downside is trying to load the water into it. The carafe doesn't quite fit the space to pour the water.
4805883
I have had the Mr. Coffee Mug Warmer for several weeks and it keeps my tea warm in those early morning hours when I am up working on a rug hooking -- far more enjoyable than a cold cup of tea.  I give it three stars because I haven't had it long enough to determine its survival rate.

Sunrise Mama
1707963
This cup is good, it really keep the coffee very warm to hot.  It fits my car cup holder perfectly.  Good buy!
1782583
Works good, keeps the coffee hot, we like it so far, will update if anything changes.
3892034
Keeps coffee or tea hot, but not too. Switch with a light, so you can if its on.
317475
Very nice. Coffee or tea, it holds heat well, nice and wide for those who like a big cup :-)
3611846
I already had another make mug warmer, but I really thing this one keeps my coffee/tea warmer longer.  I probably will send for another soon.
3803648
This cup is microwaveable.  The coffee can be scorching hot and not burn my hand.  It holds more than a regular coffee cup, but not a huge amount.  The top seals well and is a good size for my smaller hands.
4142196
Received this item today intact on time. Read the manual, cleaned the machine and made my first pot of coffee. A previous reviewer wrote that the coffee comes out not hot enough. That's true. It is quite warm but not a steaming hot cup of joe. The heater elements in these smaller machines are
not big enough. Poured the coffee into a cup and put it in the microwave for a few seconds. Time will vary. Problem solved. Works fine this way for one or two people. Otherwise, you will want a larger machine. On the plus side:  doesn't take up a lot of counter space, easy to use and clean. I will keep it.
2046204
I'm very happy with this cup. It's a pretty good size (a little bigger might be nice), lightweight, and the insulation makes a big difference over a non-insulated cup. One thing I've noticed in camping at higher elevations is that because of the lower boiling temperature, by the time the coffee, tea, etc. is done it's not that hot anymore. If you're using a plain metal cup, your drink is almost always too cool by the time you finish it. One other quick hit, I'm glad I went with the red color. With that, you can set it down and easily find it again if you're working on something.
2611715
It looks decent and does the job: keeps the coffee warmer for about  5-10 minutes longer than a regular coffee mug. Works fine in the microwave also. Have switched to it completely since it purchased it a few weeks ago.