1、It features stable working performance, safe, low noise and high efficiency 2、A practical tool using in home, brings much convenience for your daily life 3、It is good for eliminating fatigue, improving work efficiency and improving sleep quality 4、It could clean the air and remove the second‑hand smoke, offering a healthy and comfortable environment 5、Has good cleaning and purifying performance, eco‑friendly and energy‑saving with low power consumption Features: It features stable working performance, safe, low noise and high efficiency. A practical tool using in home, brings much convenience for your daily life. It is good for eliminating fatigue, improving work efficiency and improving sleep quality. It could clean the air and remove the second-hand smoke, offering a healthy and comfortable environment. Has good cleaning and purifying performance, eco-friendly and energy-saving with low power consumption. Specification: Condition: Brand New Material: ABS + Silicone Wire Input Voltage: AC200-240V, AC110V, DC12V (optional) Power: Less Than 1W Working Temperature: -10℃~50℃ Working Humidity: 35%~85% Storage Temperature: -20℃~50℃ Negative Ion Concentration: 2400000pcs/cm³ Output Voltage: -6-8KV DC Negative Ion Input Line Color: Red, Black Negative Ion Output Line Color: 4 Red Lines Product Size: Approx. 42*25*21 mm / 1.7*1.0*0.8 in Weight: Approx. 39g~44g / 1.4oz~1.6 oz Package list: 1 * Negative Ion Generator Note: 1. Please allow 0-1 cm error due to manual measurement. Thanks for your understanding. 2. Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard.