High efficiency air purifier, capturing second hand smoking, formaldehyde, PM 2.5, odor, dust particles, gasoloid and so on in your home or car. Keeping your living environment clean and filled with fresh air. Easy and quiet operation, safe to use. Get it and enjoy a cleaned-up breathing space all around it! Features: Air Purifier with Electronic FilterAdopts electronic filter to remove harmful substance, no need to replace, more money-saving. Safe to use, high removal rate, effective air purification. Enjoy Fresh AirCaptures second hand smoking, formaldehyde, benzene, PM 2.5, odor, dust particles, gasoloid and so on, let you enjoy the fresh air. 3 Wind Speed SwitchableLow/ medium/ high wind speed mode for switching, choose the suitable mode according to air quality. Quite OperationWith brushless fan, filters the air with the lowest noise level as quiet as 45dB for a restful and soothing environment, will not disturb sleep or work. Rechargeable BatteryBuilt in 4000mAh large capacity lithium battery, cordless design, fits for both indoor and outdoor use, long working time when full charged. Wide ApplicationCompact size, suitable for bedroom, baby room, bathroom, kitchen, wardrobe, car, etc. With detachable wind inlet and outlet, easy to clean. Specifications: Color: White Material: ABS + Silicone Wind Speed: 3 Gears Working Voltage: DC 5V Working Current: Max. 660mA Rated Power: 7.5W Noise: 45dB Applicable Area: 20-30 Removing Rate: Formaldehyde 99.9%, PM2.5 91.4% (Tested on 1m3 space) Charging Time: about 4.5H Charging Current: 1.6A Built-in Battery: 2 * 3.7V 2000mAh Lithium Battery Product Size: 160 * 190mm / 6.3 * 7.5in (Dia. * H) Package Size: 22 * 17.5 * 17.5cm / 8.7 * 6.9 * 6.9in Package Weight: 940g / 2.1lbs Package List: 1 * Air Purifier 1 * USB Cable (Type-C) 1 * User Manual