It can be used wirelessly, and it can also be used while charging. Use the universal USB interface to charge.Curved large blade design, wind speed up to 4.2m/s, strong wind.180 free vertical flip, 120 shaking head, support any angle.Alloy telescopic rod, sturdy and durable, 108-1000mm length adjustable, can be used on the desktop and on the ground.Foldable design, no need to disassemble, easy to carry.One-button switch, 4-speed wind speed adjustment.Rotation lock, use safety reinforcement.32-40db low noise, does not affect rest and sleep.Product Name: Folding Telescopic FanMain material: alloy, ABS, PCProduct weight: 780gControl method: push-buttonWorking principle: air circulationWind speed gear: 3+1 gearWind speed mode: soft wind/standard wind/strong windWorking time: 5-10 hoursNoise decibel: 32-40dbFunction: mobile phone stand function/flip/telescopic/foldableNote: This product can be used while charging.