Features: Reliable Radiation Detector: Radiation detector uses a 48mm counter tube which can detect the radiation level of any object or any environment at any time.Such as radiation detection antiques building materials furniture food etc.Small volume and the clip design is easy to carry. High Detection Performance: :Ultra-fast detection with small measurement error margins radiation-hardened detector detects Beta Gamma X-ray almost instantly with real-time updates of radiation dose data and interval averages every second. Easy Operation: Easy to use compact and portable the operation interface is simple and clear. You don't need mach professional knowledge. High Sensitivity: Radiation detector measured and calibrated by the national metrology institute with high data accuracy.When the dose rate radiation dose exceeds the threshold an audible and flashing alarm will automatically sound. After-sales Service: If you receive a defective product or have any problems during use please feel free to contact us We will contact you as soon as possible. Notice: Actual color may be slightly different from the image due to different display and light effect. Please allow 1-3cm deviation due to manual measurement. Specifications: Sensor: 48mm counter tube Measurement Range: 0.05uSv ~ 50mSv Measurement Accuracy: -17% ~ + 25% based on 137Cs Working Environment: Temperature -20 ~ 50; Humidity < 95% RH No condensation Battery Life: 50Hour (continuous measurement screen sleep) Charging Time: 2 to 3 hours Charging Interface: Type-C interface (when charging green light on and full light off) Size: 15.3mm*108mm Weight: 19 g includes: 1 * Nuclear Radiation Detector "