Cute Mug Warmer Pad with USB Descriptions:
- When the coasters are connected to a computer by USB or a 5V charging switch interface, they begin to create heat.
- The heating impact is subtle; it is advised for keeping hot water warm and for allowing tea or coffee to cool more slowly ( 200ml hot water long time keep Warm about 35-40 degrees)
- For optimal heating, use a thin glass flat bottom cup and a metal flat bottom cup.
- Cable length ranges from 100 to 115 cm.