Customer Ratings & Reviews

It does what it claims to do. It keeps beverages at desired temperature.

Mother's Day replacement for white Ember that bit the dust after two years of HEAVY USE. Wife LOVES LOVES LOVES her Ember and wouldn't drink coffee any other way. Blue Ember on sale for a price I've never seen before. Easy pickup and perfect for wife for Mother's Day.

This mug is wonderful. Every cup of coffee stays at just the right temperature and the cup recharges quickly. Took one star off because it will not stay linked to the Ember app.

I've been using this mug for nearly a month now, and I can honestly say it is the greatest splurge I've ever allowed myself! It will keep my coffee piping hot for about an hour and a half away from the charger. I keep the charger near where I sit "most" of the time for my coffee time, and using the charger as a coaster, it will keep it hot as long as it's there. Using the app will allow you to choose the perfect temperature preferred. I believe 140 F is the max, but I've found 135 to be my sweet zone. If you use creamer, I highly suggest spending a bit more for the 14 oz option! I make 10 oz of coffee with my Keurig and with the cream added, 14 oz is the perfect size. I absolutely LOVE this mug!

This is a great mug for the all day coffee drinker. The battery life is not great so make sure you leave the coaster style charger nearby. Very high quality and easy to clean.

On sale completely worth it. Easy to use with app, always keeping coffee the perfect temp. The color is really nice too.

These mugs are decent. They keep your drink somewhat warm for up to ~an hour and a half, even if you have it set on the charging pad. The heating element is located at the base of the cup which creates more of a temperature gradient, which is pretty noticeable if you have a full cup of coffee. If you have a milky drink like a latte in it the milk usually burns a little at the bottom leaving a fatty residue, which isn't a big deal but it isn't ideal. Ultimately I find these mugs to be overpriced and not worth it when you can get a really good thermos for a fraction of the price and it will actually keep your drink warm longer given the limited battery life of the mug. It's unclear how long the batteries on these will last. It could be that over a year or Overall, these mugs aren't quite worth the price, though I really wanted them to be.

I wasn’t sure if I would actually use this but I use it everyday at work!! I set my temperature on the app & I don’t have to worry about my coffee getting cold!

This is a very cool piece of technology. If you can wrap your head around a $130 coffee mug this does a great job keeping your coffee as warm or piping hot as you want it to be. I do notice that the battery life after being removed from the charge pad at a full charge does not last more than a couple of hours, so the best way to use this is to use it constantly with the pad to ensure it stays on. The mug does not insulate the coffee any more than a normal mug once the heating element is turned off. Overall, worth it if you can keep it on your desk and it will keep coffee hot all day. Otherwise, you may be better served with an insulated travel mug like a Yeti or some brand of that sort.

It definitely works as advertised: your coffee stays hot until your last sip. However, it does come with a price tag just over $100. That being said, it's a splurge I do recommend if youre a big coffee or hot tea drinker - its so worth it if you are.

Every sip is like the first, fresh, warm and freaking exhilarating. This cup is amazing. It truly provides "the perfect sip" every time. Only problem is the battery goes dead relatively quickly... approx 90-120 minutes. I'm a 2-3 cup guy. The first 1-2 cups go down in the first two hours I'm up. Then I kind of slowly drink the 2nd or 3rd cup until about 10:00 -11:00 am.

This cup is incredible!! Any serious coffee drinker should get one. Your coffee stays hot for about an hour before it needs to be charged. If a person works, you can connect the plate to electricity from your desk, you can continually have HOT coffee all day.

Sleek and beautiful! Works great to keep your beverage at the drinking temperature you prefer. Very easy to use.

Docked a star for the price, but if you're willing to spend the money, this mug is amazing! Nothing like having hot coffee at your desired temp for hours if you choose (by using the charger as a base). Using silicone spoons to stir due to the endless number of peeling reviews out there, but no issues so far

Love the size, color and style. Keep liquids hot all day.

My wife loved it, her coffee at the right temperature and stays warm from the first sip. Made of good material, great look and easy to clean it. Noticed there were several options in colors and sizes. It’s the kind of gift that will be used and not put aside. I don’t know if it can be engraved, which would be great.

Now I don't have to reheat my morning cup of coffee in the microwave. This Ember keeps two cups at the right temperature all morning long. I have to remember to place it on the charger each night so it is fully charged in the morning.

Recently purchased. Battery might last 15 min on the pre-set temp. I really am not interested in putting the ap on my phone. Registerd the mug and put in a support ticket within 24 hrs of receiving this. Yes i did fully charge it. While it works... it is awesome. But frankly the coffee doesn't cool down much in 15min anyway. It has been a few weeks. No response from customer service at ember. I think i might still be in the return window... maybe not. I really liked the coffee staying hot, but a 15 min window and has to get back on the charger isn't worth it to me. I wish it did work for a longer time frame... support is nonexistent from ember.

I like the cup but it is a bit on the heavy side. The concept is great and it does keep my coffee warm. The coffee comes out of my Kuerig at 156 degrees, which must be about normal but the highest setting for the cup is 145. I don’t think I get the full 90 minutes of battery life with the setting at 145. It’s a great concept, I just wish it could keep my coffee hotter.

I loved using this mug for the 18 months it lasted for. It kept my coffee hot for a few hours, longer if I let it sit on the charger by my desk. First the good: When it works, it does a good job at maintaining the configured temperature. It's a great concept, isn't too heavy, and has a decent battery life if you enjoy sipping coffee or tea. The ugly: After 18 months, the ceramic coating began to flake off the lip of the mug. I only ever washed it with a soft bottle brush. Ember claimed the coating was FDA approved so would not harm me if ingested and offered me 20% off of a replacement mug which costs almost as much as the retail packaging. Since I'd rather not like ceramic flakes with my coffee I'm no longer using the mug, and given how expensive the mug is, I'm not considering replacing it. The bad: the software just isn't great. It constantly tries to pair with the mug and requires periodic factory resets to fix pairing issues, causing me to lose my mug customization. Physically powering off the mug and force killing the android app seems to prevent these issues. Ember doesn't have an e-waste recycling program for when the battery hits its end of life, and it's not replaceable. They encouraged me to bring it to Best Buy for recycling instead. When the battery runs out of power, the existing insulation in the mug does a poor job of maintaining temperature as well- I get better thermal performance from a ceramic mug. Conclusion: gets bonus points for a neat idea, but if it's only going to hold up for 18 months, I say stay away. Buy a dishwasher safe sealed insulated mug instead- it may not maintain the temperature with the same precision, but it'll last longer and is significantly less costly.