Features: One Machine Multipurpose, monitor CO2 and formaldehyde at the same time, high-performance chip to ensure higher detection accuracy. Highly accurate air quality monitoring system with professional-grade detection technology, accurately and quickly test. Air supervision can be carried out continuously to ensure timely detection of control quality problems. Large LCD display, convenient for your reading anytime. No need to stare at the machine value all the time, once the value exceeds the limit, it will immediately sound an alarm. Suitable for use in the car, living room, house with new furniture and decoration, kitchen, bedroom, office, classroom, etc. Specifications: Main material: ABS Color: White Battery: Built-in 1200mAh Charging Time: 2-3 hours Standby Time: Continuous 7-9 hours Product size: 143*108*29mm Product weight: 190g Note: *There could be some deviations due to manual measurement or slight color difference owing to photographing condition. Thank you for your understanding. Package information: Package Weight: 330g Package size: 18.5*12.9*3.5cm Package list: 1 * Detector 1 * USB Cable 2 * Double-sided adhesive 1 * Manual