“The battery ... this mug. It is also less expensive than the Ember.” People also have so many great tips for how to get the most out of the self-warming NextMug. The best one? Avoid stirring ...
How to Use: Double click the button to power, "30s" means self stirring coffee drinks ... 24 Hours AUTO Shut Off: The Thermostatic Stirring Coffee Mug will auto shut off after continually working ...