USB Coffee Heater is made of high-quality wood and metal materials, heated evenly, is safe and strong to use.
Lightweight and compact size, easy to handle, and suitable for many stainless steel cups, serving bottles, clay cups, glass cups, etc. Enabled any device with a 5V USB port effect, such as your computer, desktop, laptop, tablet, mobile power, etc., is simple and easy.
Connect the USB interface to the pc and you can start charging the battery inside the cup using the USB cable in the cup in the DC interface.
Warm Laser Metal Portable USB Cup Cup: Portable Laser Metal USB Coffee Cup Warmer