Portable Air Purifier Wearable Small Air Purifier Necklace USB Air Cleaner Personal Negative Ion Purifier Negative Ion Generator Personal Air Freshener for Adult,Kids,Room,Home(White)

Specification: Power Supply:USB Working principle:anions Applicable area:below 10m² Functions:air fresher Filter type:no Anion density:7millions pcs/cm³ Noise: below 25dB Input voltage: 5V Input power: 0.1W Size: 50x50x15mm/2.2x2.2x0.56inch Charging time:obout 1 hour Length of use:28 hours Power Supply:USB battery capacity:200MA Package including: 1x Air Purifier Necklace 1x Charging Cable 1x Gift box Notice: Actual color may be slightly different from the image due to different monitor and light effect Please allow 1-3cm deviation due to manual measurement