Feature 1SENSITIVE AND ACCURATE: Use the Geiger Mueller tube counter to measure nuclear radiation, the induction is sensitive, and the accuracy of the measurement results is guaranteed 2WITH ALARM: Beta, Gamma and X ray combined radiation detection. Provides audible and visual alerts if radiation is detected 3FLEXIBLE CHARGING: Includes rechargeable battery, can be charged via USB or car charger, very convenient 4SMALL AND LIGHTWEIGHT: Pen type design, easy to hold and carry, detection range from 0.05uSv50mSv 5APPLICABLE SCENARIOS: The radiation level of any object or any environment can be detected at any time, such as radiation detection of toys, antiques, building materials, furniture, decoration, food, etc.Item Type: Nuclear Radiation DetectorMaterial: ABSBattery: 1 x Polymer lithium battery, Battery Capacity: 150mAhDetection Range: 0.05uSv-50mSvWorking Environment: Temperature -20~50; humidity <95%RH without condensationBattery Life: 50 Hour (continuous measurement, screen sleep)Charging Time: 2~3 HourCharging Interface: TYPE C interface (green light is always on when charging, full off) . Package List1 x Detector1 x Charging Cable1 x User Manual