USB Cafe Pad + 4 port USB Hub Warm your mug and keep your coffee or tea in a thermal holding pattern. Features & Specifications: Keeps your hot drinks warm Temperature range of 40 ~ 80 degree celsius (From boarder to center) USB powered: 5V/500mA On/Off power switch, LED indicator Material: ABS shell, Stainless steel heating pad Size: 100 x 93 x 21 mm Heating pad diameter: 75 mm Cable length: 150 cm Weight : 101 gm Carton:100pcs/set, G.W:16kg N.W:15kg Carton Size:37.5X30.5X55CM Size: 92 x 105 x 22mm