Charging Time: 4 Hours Usb Output: 5V 3A Battery Pack: 25V 3A Product Weight: 660 Grams Rated Power: 350-450W Wind Stall: Two Hot and Cold Regulation Output Temperature: 50-70 C Use Time: Full of Saturation, Continuous Use of Hot and Cold Alternation Can Reach About 60 Minutes, Cold Air 200-240 Minutes, Hot Air 15-20 MinutesHigh Quality :The use of precision probe technology ensures perfect contact with snap-on conductive, ultra-high power 450W dual speed adjustable hot and cold air, detachable air nozzle, DC charging hole.And we control the every steps in manufacture to make sure the high quality product to our customers. Safety : Differing from the domestic ac hair dryer, the dc hair dryer designed powered by lithium polymer batteries. Has no electromagnetic radiation produced by the heating coils, the wind is mild and harmless, and Will not have a bad influence on the body. Multifunction : It is not only a hair dryer, And still an emergency portable charger.You could take the battery out when in need. It becomes a charger, you only need to get a USB cable, Emergency use is very convenient. Rechargeable : The product needs to be charged for 4 hours, continuously supplying of hot air10-20 minutes, cold air for 3-4 hours,With the battery replacement mechanism, you can purchase additional batteries so that the hair dryer can work better. Wireless Design: A unique design for this hair dryer, Without the restraint of a cord, usage is no longer constrained by the power outlet.powered by battery and wireless. Perfect for traveling, outdoor camping, hiking, swimming, painting testing, Pet care, child care, etc.