This is rechargeable hair dryer, with hot wind and cold air are available, cordless use suitable for drying baby skin hair, and drying painting for student class etc.?Apply to? This item can be suitable for: student take to school drying painting, take toddlers' to dry hair and skin, art lovers drying art painting, drying baby hair, desktop cleanup and car cleanup etc. ?As a power bank?It is with the USB output saving energy interface,and the battery pack can be as a mobile power source for charging the mobile phone, power bank, MP4 and other digital products. ?Carry-on size?About 360 gram, and portable size, easy to carry. Does not occupy space and location, Can be put in a school bag, sport bag,sketch bag,travel bag and some other small bag. ?Constant temperature technology Longer use time?the cordless hair dryer with lithium battery, should be charged 5-6 hours to get fully charged, continuously supply hot wind for 12-15 minutes, supply cold wind for 120 minutes. The hot temperature is about 45 C. ?Cold air hot air available? Hot air worked also by battery, dual gears adjustable hot and cold air, ultra high power up to 150watt-180Watt, detachable air nozzle, DC hole and AC port are available, package with 2 lines,1 charger and 1 AC lines. Hot air worked by battery, and also can get hot air by using this AC line to plug in the household electricity.