The Ember Black Travel Thermos is a sleek and modern 12oz travel mug made of stainless steel, with a solid black color and round shape. It is designed for keeping your hot beverages at the perfect temperature while on the go. This includes a mug suitable for all occasions, featuring the Ember brand's innovative temperature control technology. The smart travel mug ensures that your drinks stay hot for longer periods, making it a stylish and practical choice for those who enjoy bringing their favorite beverages on the move. Does not come with charger & has not been tested.