Feature: 1. DETECTION OF RADIATION: Geiger counter technology tube, counting instrument for detection of nuclear radiation(β ray, Y ray and X ray) strength, possess high sensitivity 2. ALL ALUMINUM ALLOY SHELL: The nuclear radiation detector adopts imported aluminum alloy shell, which breaks the traditional material and possesses good strength and good corrosion resistance 3. ONE KEY START: The nuclear radiation detector is started with GM counter tube, with sensitive induction, to ensure the accuracy of measurement results 4. CLEAR DISPLAY: Geiger meter with TFT HD display, showing instantaneous dose rate, cumulative dose rate, average dose rate, easy to observe in different light environment, easy to read 5. THREE KINDS OF ALARM REMINDER: Geiger meter has sound, flashing light, vibration over limit alarm warning, timely alarm to ensure safety Specification: Item Type: Nuclear Radiation Detector Product Size: Approx. 10.6 x 2.8 x 1.7cm / 4.2 x 1.1 x 0.7in Detection And Counting: Approx. 48mm / 1.89in Geiger counter tube Measuring Range: 0.08uSv-10mSv Use: Nuclear radiation detector Working Environment: -10-50℃; Humidity <95%RH no condensation Battery Capacity: Lithium battery, 400mah Endurance: 15~24 Hours Charging Time: 1 Hour Charging Mode: USB type C Material: Aluminium alloy Weight: 118 g / 4.2 oz(approx.) Color: Gray Black. Package List: 1 x Nuclear Radiation Detector1 x USB Cable1 x User Manual