Features: Wireless Mute Potable Air cooler fan small size, make it perfect to use overnight for a comfortable sleeping, energy efficient. It does not contain harmful refrigerant, nor does it use a compressor like a conventional power consuming air conditioner. With high efficiency at low power of working wattage 200ML Large Water for tank can be used for 4-6 hours When filling it up. Cold air can be sprayed continuously for several hours to keep the body cool at night for a good sleep. Rechargeable with Mobile devices for power supply. With large battery power supply, 6-12 hours working for time when fully charged, don'for t worry about power failure. Lightwieght and easy to carry, very suitable for homes, offices, outdoor, picnics, etc. Specifications: Material: ABS Battery Capacity: 4000mAh Battery Voltage: 3.7V Battery Power: <11.5W Input: for DC 5V/2A Power Interface: USB Interface Air volume: 40-60 CFM Water for Tank Capacity: 200ml Winds Speed: 3 Modes (High / Medium / Low) Spray Time: 4-6 hours Color: Blue, Green, White Size: Approx. 12.5x11.4x19.5cm/4.92x4.48x7.67in Weight: Approx. 753g Package Includes: 1 Piece Water-cooled Air Conditioner Fan note: 1.Please allow 0-1cm error due to manual measurement. pls make sure you do not mind before you bid. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you!