Overview:
1. 5V USB interface, 1 heating element.
2. 3 levels adjustable temperature. The temperature can be adjusted.
3. Washable, safe and comfortable, keep warm and cold.
4. Product does not include battery

Specification
Length:11 inch
Width:10.5inch
Single: PP bag + box packaging,
Box: 27.5*17*5CM,
Weight 335G

Only Battery contains: 3.7V 3400 battery + a charging cable

Package Content :
Heating hat*1