USB Hub with Mug Warmer for Coffee Tea Temperature Control

4 Port USB Hub Tea Coffee Cup Mug Warmer Liquid Temperature Electric Warmer For PC Heater Pad Features: 1. Adopt smart chip to control the liquid temperature around 20-40°C (40°C Max) 2. Use insulation material to prevent short circuit in case of water spillage 3. ABS plastic, durable and long service life 4. Compliant with USB 2.0 specification, Backwards compatible with USB1.1 5. Individual port overcurrent protective function 6. No driver installation requirement Specifications: Size: 103*95*22 mm Input: DC 5.0V 500-1000mA Material: ABS plastic Color: Silver Package included: 1x USB HUB & Warmer