Top Deals Personal Wearable Air Purifier Necklace Mini Portable Air Freshner Ionizer Negative Ion Generator for Travel 1.The pulse tip technology is used to release a large amount of oxygen . The latest carbon brush negative ion generator design uses over 10 million negative ions to effectively remove harmful substances such as floating dust, smoke, formaldehyde and PM2.5 in the air. 2.Release a large amount of oxygen , decompose smoke, odor and formaldehyde, benzene and other harmful gases released by car parts (such as sheet, leather). 3.Mini,portable necklace design, stylish and convenient to carry. 4.Easy to operate, one button for on/off.Just press the button for two seconds to enjoy the fresh air. 5.Gift of Love: stylish design make your surroundings more colorful, more fun. Perfect gift idea for family and friends. Power (W): less than equal 0.1w Voltage (V): 5V Style: Air Purifier Application area: 11-20 Installation: Mini Type: Negative Ion Power Source: Electrical Noise: less than equal 50dB Density: Greater than10 million pcs/m Model Number: Air Purifier Necklace Power Supply: USB Battery capacity: 200mAh Charging time: 0.5H Fully charged work: 30H size:47 x 35 x 15mm Material:ABS colour:Silver / black / red / white Package Contents: 1 x purifier 1 x usb cable 1 x Chain 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.