1Small and lightweight, which is easy to carry 2Have an effective disinfection, let you to take deep breaths, and let the fresh air fill up very cell of your body 3One-button control, no need for setting 4Sterilization of the bacteria by using ozone, the function and characteristics of ozone 5Maintenance free, no consumables Description: The operation is simple and easy to carry. Designed for the most readily derived bacteria and bacteria, the internal ventilation, piping and wet and effective disinfection.Features: 1. Small and lightweight, which is easy to carry. 2. Have an effective disinfection, let you to take deep breaths, and let the fresh air fill up very cell of your body. 3. One-button control, no need for setting. 4. Sterilization of the bacteria by using ozone, the function and characteristics of ozone. 5. Maintenance free, no consumables. 6. Silent designing, built in high power processor, running noiseless.7. The product has a appearance patent and has passed the CE.FCC certification. 8. Come with a rechargeable lithium-ion battery. And the charger is included. 9. 50,000 Hrs lifetime. Specifications: Item Type: Air Purifiers Item Size: 11.7 x 6.8 x 5.0cm / 4.6 x 2.7 x 2.0in Package Weight: 292g Rechargeable Lithium-ion Battery: 2000mAh Battery Life: 10 years Power: 3W Storage Temperature: -20 centigrade -55 centigrade Operating Temperature: -5 centigrade -45 centigrade IPX 1P (Ingress protection): IPX1 Package List: 1 x Main Machine 1 x USB Cable 1 x English Manual Note: It is recommended to read the user's manual carefully before using the machine.