USB MUG HEATER

MUG WARMER two in one.
With USB cable (can be connected to a computer) with 4 USB hubs (can charge a phone and connect USB simultaneously)
Unique airtight design.
Heating surface
amplitude approximately 40 °C.
You won't get burned, but we recommend not touching the activated plate.
Specifications:
Maximum mug diameter: 7.5 cm.
Each port can connect devices up to 500MA, the hub is not
suitable for power-intensive devices (such as external hard drives, etc.)
Cable length 1.15cm