Features 1、[Multi Function] Integrating altitude, atmospheric pressure, CO, temperature, and humidity functions for comprehensive environment monitoring, suitable for high altitude areas and outdoor activities. 2、[High Accuracy Sensor] This air quality detector adopts advanced sensor, ensuring accurate and reassuring air quality data even in extreme environments. 3、[Real Time Data Monitoring] Provides real time data monitoring and display, allowing users to access current environmental parameters at any time to plan routes. 4、[Convenient Design] Lightweight and portable, suitable for outdoor camping, mountaineering, and exploration activities, easily carried in a backpack without adding extra burden. 5、[Long Endurance] Built in 1000mAh lithium polymer battery, ensuring long term outdoor use. The device is made of sturdy material and can withstand harsh environments. Specifications Item Type: Portable Air Quality Detector Material: ABS Battery: Lithium Polymer Battery 1000mah (Included) CO Detection Range: 0-999 ppm Resolution: 1 ppm Atmospheric Pressure Detection Range: 300-1100 kpa Resolution: 1 hpa Relative Accuracy: ±0.12 hpa (950-1050 hpa at 25℃) Absolute Accuracy: ±1 hpa (950-1050 hpa at 0-40℃) Altitude Detection Range: -500 to 9000 meters (-1640 to 29527 feet) Resolution: 1 meter (feet) Accuracy: ±8 meters Environmental Temperature Detection Range: 10 to +50℃ (-14 to 122℉) Resolution: 1℃/℉ Accuracy: ±1℃ (1.8℉) Unit: ℃/℉ Environmental Humidity Detection Range: 0-99% Resolution: 1% Accuracy: ±-3% Unit: Relative Humidity (%) Weight: Approx. 207.00g / 7.3oz Package List 1 x Portable Air Quality Detector (Battery Included) 1 x Data Cable 1 x User Manual 1 x Clip