Feature 1High Sensitivity: The nuclear radiation detector uses high sensitivity counter detection technology with an accuracy of 0.01Sv/h. The nuclear radiation dosimeter detects , X and rays radiation and will automatically sound an alarm when the radiation level exceeds 0.5Sv/h. 2Realtime Monitoring: Large backlit LCD screen, which can be seen clearly even in dark places. Realtime values and average values can be displayed on the screen, and you can also view a trend graph of realtime data changes. 3Lightweight: You can put this lightly designed radiation detector in your bag and carry it anywhere. With a bracket on the back, it is easy to install the nuclear radiation detector and observe the data. 4USB Charging: This nuclear radiation detector has a large capacity 2500mAh battery with a power consumption of only 0.25W. Equipped with a USB charging cable, it can detect immediately after power on, without calibration and with clear and intuitive data. 5Wide Apply: The detector is suitable for home radiation, irradiation processing, enterprises, health, radioactive treatment, nuclear laboratories, nuclear power plants, export commodity inspection, building materials and other situations.Item Type: Nuclear Radiation DetectorMaterial: ABSBattery: 1 X 2500mAh 18650 Li Ion Battery (Shipping With Built in Battery)Sensor Type: Energy Compensated GM TubeDetection Rays Type: , X and raysEnergy Range: 48keV-3.0MeV(137Cs-)Relative Inherent Error: <5%(1mSv/H)Measurement Range: Dose Rate: 0.00Sv/H to 10mSv/HMeasurement Range: Dose: 0.00Sv to 10 SvSensitivity: > 1.5cps/Sv/H (Vs. 137Cs)Operating Temperature -10 - +50 +10%Power Consumption: 0.25WCharging Time : 4 To 5 HoursBattery Capacity: 2500mAh . Package List1 x HandheldNuclearRadiationDetector1 x Charging Cable1 x Instruction Manual