3 wind speeds adjustable, fast and slow, meets different cooling needs in summer Built-in 4000mAh lithium battery, supports continuous use for 12 hours in fully charged state The design of the air-conditioning vortex cross-flow air duct is adopted, and the principle of three-dimensional wind mechanics is adopted, so that the air supply is three-dimensional and full 90-degree left and right shaking head, 20-degree up adjustment design, soft wind blowing Magnetic suspension noise reduction motor + atmospheric airflow system, all-round noise reduction No fan blade design, fine grid, to avoid finger pinching Specification: Rated input: 5V/1A Weight: 580g Battery: 4000mAh Size: 268x101x101mm Standards: GB4706.1-2005, GB4706.27-2008 Package included: 1 x Fan 1 x Charging Cable 1 x English and Chinese User Manual Other items not included