Neck-type purifier in addition to second-hand small portable portable negative purifier Description: Portable design The hanging purifier is 85x37x21cm/ 3.34x1.45x0.83inch(LxWxH) size, compact and lightweight, occupying much installation space. The attached stainless steel chain can turn it into a small necklace easily for convenient of neck wearing, perfect for daily carrying and travel usage, cleaning the surround in 15 seconds, removing PM2.5, , secondhand- by the negative effectively. Two mode design memory function The hanging purifier has two modes to choose among 8000-12000 W/ centimeters arrange, sufficing your different using need. Besides, the negative generator can remember the last mode at the boot, no need of adjust again. Easy display The hanging purifier with digital battery indicator and mode icons is easy to operate, no process. You can adjust the mode and control the power by button conveniently. Safe design The negative necklace is designed with two heightened negative transmitter tips, easy to be touched directly, safe and for daily usage. Rechargeable battery long working The Type-c 700mAh rechargeable neck freshener can support for 32-60h working with 2 hours charging, no power cable limitation, practical and convenient. Specification: Voltage: DC5V Power: < 1W Current: < 50mA Battery capacity: 700mAh Weight: 46 grams Material: ABS + PC Product size: 8x4x4cm Negative release: >8x107 ions/cm3 Material: Plastic Package Size: 15 x 9x 3cm Package Content : 1x hanging purifier 1x Type-c cable 1x manual 1x stainless steel chain 1x chain adjustment tool 1x package box