Features: 3200mA with large capacity battery, suitable for outdoor mountaineering. Observing atmospheric pressure , a favorite of mountaineer. Multifunction: It can detect temperature and humidity, carbon dioxide, atmospheric pressure. You can view the required data. Small, easy to carry and can be carried with you. Large screen design, real-time monitoring, clear digital display, clear test results, the fastest detection and accurate values. Wide range of practical applications: agricultural planting, greenhouse vegetables, production warehouses, etc. Specifications: Material:ABS Battery:3200mah Size:Approx.90x40x110mm/3.54''x1.57''x 4.33'' Note: Please allow 1mm errors due to manual measurement. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Package includes: 1x CO2 Meter 1x Base 1x Clamp 1x USB Cable