Coffee Mug Warmer with Candle Warmer Plate - 2-Setting Adjustable Desk Mug Warmer for Coffee & Tea - Safe & Portable Electric Cup Warmer for Office, Home, Dorm - Perfect for Work, Study & Relaxation

So, this works REALLY WELL to keep your coffee & tea HOT!!! I have it on my desk right next to my Qi phone charger, which also happens to be round and black. While in a rush, I hastily set my phone on this thing thinking it was the charger and when I came back, I smelled this awful burned rubber aroma -- It was this coffee warmer. Luckily my phone was fine once it cooled down, but the case that protected it melted all over this warmer. Needless to say, I had a massive clean-up, purchased a new phone case -- oh and I replaced that phone charger with one that looks completely different now so I can't mistake one for the other.One negative note -- There's not much for safety overrides on this thing, so use with caution -- It does have the potential to cause a fire if you put something flammable on it.I really love this warmer, it keeps coffee hot when I’m working on my crafts.I originally bought a pink one for myself and loved it so much, I decided I would buy 4 more pink ones as Christmas gifts for all the ladies of our family. Some of the boxes look a little dented and scratched but other than that they were perfect. I am leaving 3 stars because I realized last night that I needed just one more and was excited to see if I purchased yesterday within an hour I would have one delivered today. It was delivered on time which was wonderful! And I opened it to just double check that it was pink, but unfortunately it is green. I wish they would have paid closer attention when selecting because I am headed out of town tomorrow to gift these to our lovely family members and I don’t have time to return and wait for another. The green isn’t as cute as the pink and I would gift my original color, but it does look worn.I've been using basic $10 mug/candle warmers, which weren't doing a great job, so I decided to splurge and try this item, hoping the higher temperature setting would do the trick. And no, it works just as well/poorly as the cheap warmers. It does look nicer, but that's it.I believe the type of mug is the key. Every mug we own has the typical concave ceramic bottom, and I have to assume a flat bottom would work better. Finding such a mug is a challenge, though.This warmer does come with a silicone cup cover, and I've found that these makes a big difference. However, I already had cup covers, so still nothing gained with this purchase.So if you want to pay more for style, go for it. If you're looking for functionality, go with one of the basic versions at a third of the price.This is a disappointing warmer. I know it is not called a "hotter" but it certainly could do a better job. It has two settings. I use the "hotter" one but it still does not keep the coffee close to very warm. I bought it to replace a years-old mug warmer. That one really keeps the coffee warm and even hot as the level gets below half a cup. I am someone who likes to sip my coffee over a couple of hours.I saw this and it has an automatic shut off feature (after 8 hours) which I though could be good since I often forget to turn off the other. I come back in the morning only to find it still on. Afraid of starting a fire so I got this new one. I know some of the reviews mentioned does not keep it very hot. But so many reviews said that, I just had to start ignoring that as a factor. Besides, with my old one I used to keep a lid over the coffee to keep it hotter. And as the level got down lower, I would have to keep the lid off because it would get too hot. I continued to use a lid with this one and it is NECESSARY in order to keep the temperature of the coffee from becoming tepid. This is so disappointing.I know it recommends to use a flat bottomed cup. But so did many other mfgs. And since I used a lid, I figured it would compensate. Well, flat bottomed cups are not really very common. Look at all of yours. There is usually at least a little ridge that keeps the bottom of most cups from completely touching the surface. I did not have any problem with the old one. But now, using the same cups I always have, it is not doing the job.So, as many other reviewers warned, unless you like warm (not 'very' warm, just warm) coffee, take a shot with another brand.It is a nice, sleek unit. It is easy to turn on and off.UPDATE 1/6/22This has been a disappointment. I have downgraded the rating from three stars to one.It only keeps the last inch or less in the cup somewhat hot. There are two settings and I only use the highest one because the lower one is useless. You also have to keep a lid on the cup, otherwise you'll have lukewarm coffee (or tea) in no time. I will be purchasing another warmer to replace this one, as I cannot take my coffee becoming tepidly warm in no time.I really wanted to like this device for keeping tea and coffee hot while at work, but this wasn't the case. As several other reviews stated, it keeps the drink warm and not hot. I would use the word "warm" loosely as it is borderline lukewarm and room temperature. I followed instructions and used a flat surface mug and used the red (high) setting and no improvement.**Update***The company contacted me to learn more about my experience and suggested I use the silicone lid provided on top of my mug to ensure the air does not cool the beverage down. I gave it a try and this corrected my issue. So while using the lid my beverage stayed hot!It takes a while. It doesn’t get as hot as you’d hopeThis was one of the mug warmers that I tried before I landed on another that did the trick. I'm not sure whether it would warm a flat bottom mug much better than my mug, which has a slight 2-3 millimeter lip under, but I couldn't get my coffee to stay warm - it does have an automatic shut off after 8 hours of non-use, I believe - the one I finally purchased and liked turned off fairly quickly once the mug was removed. Very sleek looking and I certainly gave up a bit of that in my final purchase, but the goal was enough heat and an auto-turn-off so that this old man wouldn't forget it and cause a fire. The higher one goes in price, the better the heating and auto-shut seem to get - after about 40$, it becomes more a choice based upon taste and budget versus utility.I am sure the product works fine, but I was expecting some nice boxed product to offer in gift bags with Valentine mugs for Valentine's day. The Diviniti boxes are not as nice as on the photo shown. They arrived dirty, dusty, and they looked used. The boxes were slightly cracked and looked damaged and unfortunately, ruined my plans to offer them as gifts. I won't be able to get clean looking ones in time for I needed them for. I am very disappointed.I use it for melting my scented waxesDoesn’t work well nice sleek look however