Generic Portable Handheld Mini Heater Air Conditioner Fan Warm Travel Plug Charge Rechargeable Packet Style (Blue) Voltage: 3.7-4.2V Powered By: rechargeable batter Elegant appearance, compact, mobile portable Easy to use, on the desktop connected to the power, turn on the switch that is warm wind blowing hand position can be adjusted according to the product put in the positionThe product with high efficiency heating material flowing through the air temperature, air temperature after heating, security, power