We all know that air is an indispensable part of our lives. The quality of air is affecting our body and mind, but the air is colorless and tasteless, we can't measure it with the eyes. At this time, we need an air tester to help to monitor the air quality. Specifications: Material: ABS Color: black+o Screen size: 2.8in O3 concentration AQI: 0~0.100: Fine 0.100~0.300: Slight 0.300~1.000: Moderate 1.000~4.999: Serious Battery: 1 * lithium battery, 2000mAh (included) Item size: 164 * 74 * 26mm / 6.5 * 2.9 * 1.0in Package size: 280 * 225 * 70mm / 11.0 * 8.9 * 2.8in Package weight: 501g / 1.1lb Packing List: 1 * Air Quality Detector 1 * USB Cable 1 * User Manual 1 * Box
