The mug warmer is compatible with any computer with free USB port. It can be used as heating plates for glass cup, baby bottle, stainless steel cup and ceramics mug. 4 port USB hub can be connected with mini fans or be used as portable charger. The plate is powered by USB, no need for batteries. It is only preservation, no heating function. 4"L x 3 5/8"W
Normal Production Time
9 Working Days
4"L x 3 5/8"W
Price includes 1 color, 1 side, 1 location. Add setup charge $30USD.