VSITOO S5 heated travel mug,16oz, Auto-Sensing AI Heats Drinks To 120-150°F Hands-Free. Temperature Control for All Cars, Perfect for Home/Office/Travel/Outdoor, Ideal Gift for Coffee Lovers – Black

overall good buy with the money I don’t leave reviews but it needs it
Size is correct my man likes it says works for about 4 hours on full heat and that’s good comes with a car charger which he’s a fan of he drives 8 hours a day for work and says it last about the full first half of the trip steaming hot the entire time and can refill while charging on the way back works just the same the cup is easy to clean and very simple to use with the app or without he says he just turns it on full heat no playing around and keeps it hot until he’s done with it and coffee hot 🔥🔥🔥 is what he likes so if u are a hot coffee or tea drinker and don’t want your drink half way through because it is being to get cold and or are just wanting to keep it hot until ur done I’m telling you this is the right cup and yes it is leak proof no spilling down the sides ,fits in the cup holder keeps a charge good gift he wanted one but wouldn’t buy it for him self so his birthday was a good one this year good gift for any one who like hot drinks overall good buy with the money I don’t leave reviews but don’t want to buy unless there is some so here it is the reason I took a picture of the Starbucks 12oz cup is for comparison so you can see the size is bigger than 12 oz

High price, low quality
Bought it for tue husband as he likes his drinks really hot and this product kept items warm, although those settings were correct.Not worth the price

Great travel item
Good material quality and weight. The connection to the charger is nice and stable with the base. Car charger is actually really nice and compact. The seal and clasp mechanism works great. Ideal for coffee from rest stops to keep it hot as you move on.

Forget the Hype, This is Engineering. The VSITOO S3 Pro Outsmarted My Smart Home!
I make my living integrating complex technology into people’s homes. I’m surrounded by gadgets that promise a seamless future but often deliver a fragmented, buggy present. So, when my wife suggested a smart coffee mug, my internal critic went on high alert. Another device to charge? Another flaky app? I was deeply familiar with the Ember Temperature Control Smart Mug 2; I’ve installed charging coasters for clients. It’s a fine product, but it feels like a first-generation device—tethered and a bit delicate. I did my own research and was drawn to the VSITOO S3 Pro for its technical specs: the 316 stainless steel, the IPX7 rating, and the promise of a long-lasting, untethered experience. I approached it not as a coffee lover, but as an engineer. After a month of rigorous testing, I’m not just satisfied; I’m impressed. This is a rare product where the software and hardware work in perfect, silent harmony.From an engineering standpoint, the build is exceptional. The mug has a low center of gravity and a satisfying heft. The scratch-resistant matte finish isn’t just for show; it provides a consistent coefficient of friction, meaning it’s less likely to slide on a smooth surface if the table is bumped—a small but thoughtful detail. The dual-walled construction is phenomenally efficient. I tested the insulation with both boiling water and ice water; it far exceeds its 24-hour claim for cooling, which directly translates to less energy required for the heating element to maintain temperature. This is smart design. The lid’s sealing mechanism is over-engineered in the best way possible. It doesn’t just seal; it creates a vacuum-assisted lock that is both audible and tactile. I’ve subjected it to shake tests that would make any other travel mug fail spectacularly.The “smart” features are where the VSITOO truly outclasses the competition. The AI sensor is a masterclass in user experience design. It eliminates the primary point of failure in most smart devices: the need for user initiation. By making the act of pouring the liquid the “on” command, they’ve achieved a 100% success rate for activation. I use the button to fine-tune the temperature, but the mug doesn’t rely on me to start. The smart temperature control is incredibly precise. Using a separate calibrated thermometer, I found it maintains within ±1°F of the set point, which is engineering-grade accuracy. This isn’t a simple on/off heating element; it’s a properly managed thermal system.The comparison to the Ember Mug 2 is a case study in design philosophy. The Ember is a “desk accessory” that requires its proprietary charging coaster, creating a single point of use. The VSITOO S3 Pro is a truly wireless, free-roaming device. Its battery life isn’t just “better”; it’s in a different category, offering 3-4 hours of continuous use. This means I can start my coffee at my desk, continue it while I’m troubleshooting a router in the living room, and finish it in the garage while organizing my tools. The VSITOO understands that modern life is mobile, even within the home. The app is simple and unobtrusive—it sets the temperature and the auto-off timer and then gets out of the way. It doesn’t try to be a social media platform or a subscription service. It’s a tool. For anyone who appreciates technology that works silently, reliably, and intelligently in the background, this temperature control smart mug is a triumph. It’s one of the few smart devices I own that has never once frustrated me, and that is the highest praise I can give.