Details Precise - Ember keeps your coffee or tea at the perfect temperature from the first sip to the last.. Simple - Ember is simple and elegant. No buttons or complicated instructions. Just rotate the dial at the bottom of the mug to adjust your temperature.. Customizable - Ember is a connected device that can be used on its own or through the app. The app allows you to remotely change your temperature, "name" your mug, create presets, and choose notification preferences.. Push-to-open leak-proof 360˚ lid. 12 ounce capacity. Cleaning - hand wash body, dishwasher safe lid. Battery lasts about 2 hours on full charge; includes Charging Coaster.We want you to be satisfied with your purchase. Please feel free to contact the manufacturer directly at Support@ember.com if there are any questions, comments, or concerns.