Advanced Audio and Visual Alerts: Equipped with a vibrant color LCD screen, this detector alerts you with a loud audio alarm and flashing CO when carbon monoxide levels exceed 50 PPM. Additionally, it warns for abnormal oxygen levels (below 19.5% or above 23.5%) with both sound alarm and flashing O2 , ensuring your safety in varied environments. Comprehensive 6-in-1 Functionality: Monitor crucial environmental parameters with one device. This detector measures oxygen, carbon monoxide, altitude, atmospheric pressure, humidity, and temperature. It features high-precision sensors with a wide range of detection: CO (0~1000PPM), O2 (0-30% vol), temperature (0~50), humidity (0~95%RH), atmospheric pressure (300-1100kpa), and altitude (-500-9000m). User-Friendly Design with Sleep Mode: The detector maintains a backlit display even while charging in sleep mode, allowing continuous monitoring and data measurement. A low battery alert sounds every 5 minutes when power is below 5%, followed by automatic shutdown, ensuring device preservation and user safety. Compact and Portable with Extended Battery Life: This mini-sized detector includes a hook for easy attachment, making it ideal for outdoor activities, camping, and travel. It features a 1600mA rechargeable battery, Type-C charging, and up to 72 hours of battery life, combining convenience with . Smart Power Management: Thedetector automatically enters a low-power sleep mode after 20 seconds of inactivity, helping to extend battery life. Simply any button to reactivate the device, ensuring you're to monitor your environment efficiently. (The buckle style is random, no specified style is accepted) Color: Orange Material: plastic Package Contents: 1 * Air Quality Monitor Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.