Description: *Main function: This product is a high-efficiency negative ion air purifier, which can actively absorb and settle PM2.5, smoke, pollen, dust, second-hand smoke, etc. to remove second-hand smoke, formaldehyde, smog, viruses and other harmful substances *Ultra-quiet design & Ultra-low ozone emission. *Your intimate partner of clean air. *Fast charge & long battery life. *Hassle-free maintenance. No filter replacement. *Clean air everywhere. It can be use in your car,hanged around your neck, perched on desk at work or by your bed at night. *Increase the ambient negative ion concentration, freshening the air and bringing positive effect on physical health and well-being. Specifications: Product material: ABS material Anion concentration: 8 million PCS/m³ Purification range: about 1m³ Battery capacity: polymer lithium battery 300mAh Charging time: about 30 minutes Battery life: more than 20 hours Battery life: more than 5000 times of charge and discharge Battery voltage: 3.7V Product size: 65*47*22mm Packing size: 85*85*45mm Product net weight: 29g Product gross weight: 102g Accessories content: anti-static safety lanyard, charging cable Others: Double negative ion emitter, bear appearance Package Included: 1XAir Purifier 1XLanyard 1XCharging Cable 1XManual