Lazy Hands Free Bladeless Fan usb charging neck fan cooling air conditioning fanparameterProduct weight: 320gBattery capacity: 4000mAhCharging time: 2 sCell: Lithium-ion batteryWind speed gear: three gearsFan Power: 8W MAXInput power: 10W fast chargeProduct size: 13x 8.5x 4.8cmFeatures1. Anti-pinching design, slender small holes, block hair from entering the air duct2. Protruding neck, human body radian design, more suitable for human neck3. Dust-proof design, semi-closed air inlet, dust-proof and sweat-proof, normal temperature drops by 20 4. The wind direction can be freely controlled, and the hose can be freely adjusted 360° without any dead angle.5.48 dual-turbo fan blades, dense fan blades, more wind