Ember temperature control tumbler in black by Ember. Keeps beverages at your preferred temperature with reliable electronic control. Portable design with integrated handle for easy carrying. Simple to use and compatible with Ember charging accessories. About this item 3 Hour Battery Life: Our Tumbler's extended battery life keeps your drink at your preferred temperature (between 120°F - 145°F) for up to 3 hours on a full charge or all day on its charging coaster. Beyond Insulation: Feel the warmth of your drink through the Ember Tumbler’s durable stainless steel construction and premium textured finish. Tumbler features all the benefits of insulation with none of the drawbacks. Adventure Ready: Tumbler is IPX7 rated for full underwater submersion up to 1 meter deep making it easy to hand wash, rinse or soak. Perfect Temperature Every Time: Multiple sensors throughout the Tumbler ensure accurate temperature control and liquid level detection. Set the temperature down to the degree in the Ember App. When empty, it will automatically enter sleep mode to conserve power. Ember intelligently turns on and off using patented sensors to detect liquid level and temperature. Once you’ve paired your Ember Tumbler to the Ember app, remotely set your drinking temperature, save presets for all your favorite drinks, try our tea steeping timers, and personalize the LED color. The Ember App is compatible with iOS and Android devices.