Sell Authentic AVICHE Air Purifier Necklace M1 VER 3.0 best price

Version 3 Product Specification Product name - Wearable Air Purifier Product model - M1 version 3.0 Colour - Black, White Negative Ions (output) >100 million pcs/cm3 Negative Ions(5cm) >50 million pcs /cm3 Noise <15 dB Effective area 1m3 Usage Air Travelling, Home, Office, Ward of hospital, Classroom, Bus Size (L x W x H) - 80 x 37 x 24 mm Net weight - 50 grams Battery - Built-in rechargeable lithium-ion battery Charge current - 200 mA Charge time - 6-7 hours Running time160-180 hours Battery capacity - 650 mAh Power<1w Cycle life >500 times Origin - China