1. Negative ions effectively purify the air, remove PM2.5, dust, harmful substances, viruses, bacteria, etc.; 2. Especially suitable for children, the elderly, pregnant women and those who are allergic to pollen and odor; 3. Effectively control bacteria and other infections around people, stay away from respiratory diseases, etc.; 4. One charge can be used continuously for 20-28 hours; 5. Special protection for pregnant women and chdren who are susceptible to air infections;Purify the surrounding environment anytime and anywhere; Name: Wearable Air Purifier Operating voltage: DC5V Battery capacity: 500mAh Anion concentration: 6 million Charging time: 0.5h Colour: White/Blue/Rose gold Material:ABS Size:52 x 52 x 18mm weight: 60g Package Contents: 1 x Portable air purifier 1 x Usb cable 1 x User manual Only the above package content, other products are not included. Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.