USB O3 Air Freshener O3-Indoor is the most compact ionic air freshener in the world. O3-indoor can generate ozone up to <0. 06 ppm and negative ion up to 2, 500, 00 ions per cubic inch. It dramatically removes odors and allergens in air. Experience forest shower while indoors. Just simply plug into 110~220V AC-DC adapter. FEATURES: The most compact ionic air freshener Simply plug into 110~220V AC-DC adapter Ozone can filtrate pollutes air, add fresh oxygen, eliminate stink and the second hand smoke. Negative ion can speed metabolism, active cell, fresh car air, eliminate dust and smoke. Uses no chemical or agents Life time up to 3, 000 hours Refresh Air: R3N+03 -> R3N-O+O2 H2S+O3 -> SO2 + H2O CH3SH+O3 -> CH3-SO3H+O2 SPECS. Type Compatibility: 110~220V AC-DC adapter Input Voltage: DC 13 ~ 15V Input Current: 76 mA Output Voltage: 9000 V~ Ozone Concentration: < 0. 06ppm Negative Ion: 2, 500, 00 ions per cubic inch Power Consumption: 0. 7 W Work Frequency: 37 Khz LED Power Indicator: Yes Reverse protection: Yes Hook Release Button: Yes Feedback Control: Yes Physical: 84 mm (L)x 25mm(D) /48. 5 gm Packing: 80 pcs/ctn; 0. 432 m3/ctn; 4. 5 kgs Safety: E-MARK No. E13*10R00*10R02*3371*00 CE No.: GLEMO060200243TXE