An multi-function testing tool to monitor the air quality, a safeguard for family health if you worry about the air quality around you or your children. Easy to operate. Large LCD screens intelligently display the testing results, easy and clear to read! Feature - Color: White. - Material: Plastic. - Size: 15.00X7.00X2.30cm/5.89X2.75X0.90 inch. - Concentration unit: / ³. - Standby time: 35h. - Battery: 2000mAh. - Power supply interface: Mini USB 5V. - Built-in a high-capacity battery. LCD display screen shows the testing results. - An multi-function testing tool to monitor the air quality, a safeguard for family health. - Compact and lightweight design makes it comfortable to wear. Detection time is short and accurate. - Widely used in home, office, enterprise, government, school and car, etc. - The 2000mAh battery provides portable power when USB charging is not available. Package list: 1 x detector