USB plug-in interface for sustainable heating .heated to 50 ? in a few minutes. maximum temperature of 60?.safe to use.
Connect the beverage warmer to your computer or 5v USB port. Keep your cup on the usb silicone coaster
The beverage warmer just help to provide insulation can not be used for heating
Please disconnect the USB port when you do not use the beverage warmer
Stainless steel cups, ceramic cup, bottle, glass can be safely put up
Buy this awesome " USB Heat Mug Warmer Pad Portable Tea Coffee Milk Cup Heater Office Tea Coffee Mug Warmer Coaster Ceramic Mug Heating Pad Mini Heater For Cup ".
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