Nextmug - Temperature-Controlled, Self-Heating Coffee Mug (14 oz.) (Burgundy)

No matter if I use this for tea or coffee, this cup works! Real easy to follow instructions, but you'll want to pay attention to it as I believe it has a shut off time. The button on the cup is easy enough to locate, but not so easy that a bump will press it. You'd have to locate it and press it to make sure it's on and on your desired drink temperature. There's 3 to choose from, I usually choose the second one because it keeps it at a hot enough temperature to make it feel like I'm drinking coffee fresh from the pot, or freshly made tea. If you work in an office setting to where this would be real handy for you, I'd recommend it. I'd even recommend it if you work from home!

Previously, I had the Ember mug (two of them to be exact) and they both stopped working after a while. I found the app to be buggy and while the concept was great, the execution just wasn't there. Because of this, I was pretty skeptical of this mug. It's been amazing, however, and overall much easier and functional without having to deal with the app.I had considered giving four stars since I've had to replace the coaster and now the mug itself but the customer service was so good, I bumped them to 5 stars. I bought this mug Jan 2024, and they have since, free of charge, sent me a new coaster and new mug. It's a great product but also, great company/customer service. they are super understanding and easy to work with if you have any issues.As for the mug itself, it works completely as advertised and keeps my coffee warm for hours!

I have had this cup for 2.25 years, using it nearly every day over that time. It kept my coffee hot for over 2 hours the first year, a little less the next year, and now it is down to half an hour. But, I have no complaint. This cup has been just what I wanted. It is easy to use, I didn't want to mess around with an app to set temps. The 3 that next mug provides are a good range and quick to change. I am going to buy another one. I will report if it doesn't pass muster. The first one sure did.

I'm not sure what aspect of my being this comes from, but I was finding myself constantly grabbing a cold mug when I finally remembered it was there. I'd make a pot of tea, make my cup, intentionally let it cool, and one way or another it was too cool / cold by the time I got to it. I can't say that I've been monitoring how long it took for the mug to cool down, but it always seemed too quick. I was already looking for a reason to get a new mug as the rounder handle resulted in holding it in a painful way and it was frankly getting heavier to my hands as well (being ceramic). So I had a few reasons to look anyway.And with that in mind, I decided to look for something that might help with those issues or at the least, not let the cup's contents drop below a certain temperature Long enough for me to get around to drinking it, while also having a more comfortable weight and handle. Initially, I thought about those coasters that heat up, but felt that that'd be too much of a burn / fire hazard and likely not able to control the temperature as well. Seeing as how I didn't know what temperature I was waiting for it to cool down too, I knew that I'd want something with a measured setting. I was also looking for something that could heat up a cold cup to the desired temperature.When I first saw this listing, I was taken back by the price, but not so much that it kept me from looking into it. Especially since I have a habit of deciding on things that one way or another tend to push the budget. I looked at the various aspects of the design and saw that it was basically self-contained, so there was a little to no chance of being hurt by the mug (unless I spilled the contents on the upper two settings). Being able to choose from a known selection of temperatures was a must on this purchase. I also liked that the handle appeared (correctly) to be large enough to fit my average sized, closed grip. While I've not weighed it, it definitely feels lighter than a comparably sized ceramic. Most of its weight is, of course, the battery at the bottom.I was a bit bummed that the charger was a barrel plug as that doesn't allow me to just grab the nearest USB-C cord from my station (where I sit). That said, if it Did have USB charging, then it would have only been to the base anyway, so that would be a moot point since it would likely never get unplugged unless moved. While I don't know how much my old mug held, it's quite apparent that this is likely a few ounces less, but it's also exactly 1/3rd of the 1L pot when brewed vs ~2.5 fills with my old mug. I'm sure I'll get used to the difference eventually.Now, when evaluating the performance of this, it became apparent that I was running into my desired functionality vs its design. It has become obvious that this is designed to start with a hot liquid and keep it at the chosen temperature until empty or the battery runs out. It does that quite well, but I can't say how long the battery actually lasts for sure because I lose track of time too easy. So when I say that it 'feels' like it's losing power (not temperature) quicker than advertised, I can't quantify that statement, but it 'feels' closer to 2-2.5 hrs vs 4 hrs (lid on). I can say that I figured out that my comfortable temperature is the lowest setting and that the middle temperature more closely resembles my freshly brewed pot. The charging time feels like forever, but definitely a couple hours from depleted.Now when trying to see how it does with 'heating from cold', that definitely seemed to drain the battery much faster while also taking a long time. I even tried setting it to that middle choice and then turning it back down, but that still drained the battery rather quickly. So if That is how you want to use it, then leave it on the charger until it's hot again (and expect to wait a bit). I did have to stop myself from walking it over to the microwave the first few times until I got myself better trained with how it's designed. Because of this, as much as I hate adding to an already pretty penny, I chose to purchase a 2nd base to sit where I eat / drink. I thought about moving the original base, but then I realized that it was better to leave that there for when I've cleaned the mug (default storage location and all that).What improvements would I like to see?1) Make a slightly larger (16oz?) mug, but have it be taller so that the base and lids don't change.2) Source a higher density battery if possible.3) Increase the speed at which it warms up (if feasible).4) Add a little more texture to the handle / housing as it is metal smooth and slides a bit easy in the hands.5) Offer a closeable lid as that should prevent spills and likely assist in keeping it warmer longer.

I no longer have to continually reheat my coffee. I'm Not a fast coffee drinker. Using the lid expands the heat time but with lid I get 3 hours not the four hours as described but 3 hours is more than sufficient!

I love the idea and could be a game changer for coffee drinkers like me. However, there are a few things that disappoints me about this mug. 1. on the "hot" setting, the battery drains way faster than I want. It doesn't last 30 minutes before it starts to blink. I am a coffee sipper, and this puts a kink by starting a clock when I turn it on. 2. the size says 14oz. However, in my 12oz Keurig setting, it fills to the very top. 3. It left coffees stain on the inside. Immediately, it makes the coffee cup look dirty and gross even after a thorough cleaning. Maybe it's the material used or muted colors. Not a fan of the muted colors. 4. I can't put it in the dishwasher. I understand the electronics, however, there's got to be a better solution than having to handwash it every time I want a cup of coffee. It's just not quite 2025 technology. I can leave cheap solar or other cheaply made electronic out in the rain and sun. No worries of the effects of water. This product should be able to handle a dishwasher for the price tag. With all that said, I like keeping my coffee hot for a longer period of time. I won't return it. But want to see it improved for a better experience.