Temperature Control Mug in midnight black. Keeps beverages at your preferred temperature with adjustable settings. Sleek black finish and ergonomic handle for comfortable use. Includes spill-proof lid for hassle-free drinking. This is a Thermacup Premium Self Heating Coffee Mug in Midnight Black, featuring an electric design to maintain beverage temperature.It has a 12-ounce capacity (or 14oz without the lid) and includes a spill-proof sliding lid.The mug offers 5 temperature settings and up to 8 hours of battery life with the lid on, rechargeable via USB-C. New In Box