Bullet Points: 1.Effortless Monitoring Experience: By combining a dust air sensor and built-in fan with LED display, you'll experience improved airflow and excellent ventilation, with real-time monitoring of PM2.5, temperature, and humidity for optimal air quality 2.Great Present: Suitable for relatives and friends. Designed as a scientific air quality detector, this user-friendly device accurately measures PM2.5 and monitors temperature and humidity for thorough air assessment Improve your indoor and outdoor air quality monitoring with our Air Detector. This scientific device combines a dust air sensor and built-in fan for accurate detection. Understand your environment better with this innovative tool, great for monitoring indoor and outdoor air quality. Specification: Material: ABS Product Size: about 7x7x3.2cm/2.76x2.76x1.26 inches Weight of single unit and package: 230 grams Battery capacity: 800 mAh Package size : about 11x9.9x6.4cm/4.33x3.9x2.52 inches Including: main unit and manual and charging cable Packing: 40pcs/case, carton size: about 49.5x40.5x25.5cm/19.49x15.94x10.04 inches A carton weighs about: 13.5 kg Product list: Air Detector*1