Specifications Material: ABS Power supply: USB Input: 5V / 1A Rated power: 5v Noise: below 36dB Air supply method: turn page Wind speed gear: 3 gears Mode of operation: mechanical Whether to support charging: support Battery capacity: 1800mAh Life time: 2-6 hours Speed control gear: third gear Falling stop: Not supported Whether to turn the page fan: yes Size: 115 * 89 * 32mm Weight: 130g Color: white, dark blue, orange   Packing List: 1x Fan 1x USB cable 1x Lanyard 1x Manual   Please Note: 1.Due to the light and screen difference, the product color may be slightly different from the pictures. 2.Please allow 0.5-2 cm differences due to manual measurement. 3.Made of premium material, durable for long-term use. 4.Conversion: 1inch=2.54cm,  1cm=0.393inches