Overview:

Cold start speed 

long battery life

quiet and convenient

Product information:
Color: 639 white【 cold compress 100 speed], 639 Gray [cold compress 100 speed],638 white【 100 speed],638 black [100 speed]]
Rated voltage and current: 5.0V--2A
Product size: 58*60.5 * 170mm
Battery capacity: 3000mAh
Charging time: About 3H
Input voltage: DC5V