General description Household Disinfection Locomotive Car Negative Ion Air Purifier effectively purifies the air by releasing a high concentration of negative ions, making it ideal for improving indoor air quality. Technical specifications Built-in negative ions: 16.7 million Release rate: 50 mg/hour Concentration: 16.1 mg/m³ Formaldehyde removal rate: 62.0% (in 15 minutes) Ammonia removal rate: 60.1% (in 15 minutes) Killing rate of Staphylococcus albicans: 99.94% Acaricide rate: 40.35% Ultrasonic generator frequency: 24000 Hz Material: ABS Color: White Package Contents 1 * machine 1 * USB cable Other information Note: Light reflection and different displays may cause the color of the item in the picture to differ slightly from the actual product. The measurement allowed error is +/- 1-3 cm.