Detailed Product Description

electric warmer bag.

1. Take 5-10 minutes to heat up only, which can keep warming hand for 2 hours and warming quilt for 10 hours. When temperature reaches 70 degree, it will keep constant temperature.

2. When temperature reaches 70 degree, the power will cut automatically to prevent heating.

3. Double-security. First, the thermostat: when temperature is reaching about 70 degrees, it will automatically switch off. Second, explosion proof: In case of the thermostat broken, the other expansion controller will begin to operate. When the temperature is up to 90 degrees, the expansion controller star to expand and break both electrodes so as to shut off the power supply.

Avirulent water, infuse one time, can be used forever.