Features 1、One cubic meter can release about 120 million+ anions, which can be purified in an all-round way, effectively improve nasal blockage and protect your free breathing. 2、Small size, hanging neck design, free your hands, easy to use anytime and anywhere. 3、Adopt double anion emitter and carbon fiber brush, the double anion generator has no filter net to purify the air better, environmental protection, long service life. Specification Features: One cubic meter can release about 120 million+ anions, which can be purified in an all-round way, effectively improve nasal blockage and protect your free breathing. Small size, hanging neck design, free your hands, easy to use anytime and anywhere. Adopt double anion emitter and carbon fiber brush, the double anion generator has no filter net to purify the air better, environmental protection, long service life. High and low gear adjustment freely, configure your air steward according to different environments to easily create your breathing comfort circle. No radiation, all components are secure and eco-friendly, more assured to use. Built-in 700mAh lithium battery, long endurance time. Specification: Type: Mini air purifier Color: Black/White(optional) Lanyard: Black lanyard/Chain(optional) Material: ABS+PC Anion concentration: 8000-12000W/㎝3 Charging interface: Type-C Battery capacity: 700mAh Working voltage: DC5V Current: <50mA Power: <1W Item size: 8 * 3.5 * 2.3cm /3.15 * 1.38 * 0.91in Item weight: Approx. 48g /1.69oz Packing list: 1 * Air purifier 1 * Data cable 1 * User manual Package List 1 * Air purifier 1 * Data cable 1 * User manual