This product adopts a micro-control chip. 1.29 inch OLED display screen, which automatically generates data files and can store 10000 groups of data, time and date, and sound alarm can be set, three main interfaces can be freely selected, dark mode and day mode can be adjusted according to the environment, and screen operation can rotate 180 . Features: It is made of premium material, antislip and antidrop, wear resistance and with comfortable grip feeling. Adopts a quality counting tube with high detection sensitivity, especially for environmental radioactivitymonitoring to detect traces of nuclear radiation and electromagnetic radiation. Configured OLED display screen, with multifunctional monitoring pages. The detector is used to measure X, and rays radiation, it is optimal for measuring small changes in radiation levels, and has high sensitivity for most commonly used nuclides. Alarm design, with sound alarm when dose rate and cumulative dose are over threshold, and the thresholds of dose rate and cumulative dose can be set manually. Wide applications, suitable for family decoration, radiation shining manufacture enterprises, hygiene, radiation treatments, nuclear lab, nuclear station, import-and-export commerce inspection, building materials, petroleum chemical, geology general investigation, used steels, industry flaw detection and others. Specifications: Material: ABS Display: OLED Sensor Type: GM tube with energy compensation DetectableType: Hard beta ray ( ), Gamma ray ( ), X-ray Energy Range: 20kev3.0mev30(137Cs-) Sensitivity: 80cpm/SV/(Co-60) Resolution: 0.01SV/h Measuring Range: 9999SV/h Real-time Error: 3% Power Supply: 5V/USB 3.7V Lithium battery/650 mAh Charging Duration: 1-2 hours Item Size: 120 * 26 * 27mm / 4.72 * 1.02 * 1.06in Item Weight: 55g / 1.94ounce Package Size: 126 * 50 * 32mm / 4.96 * 1.97 * 1.26in Package Weight: 98g / 3.46ounce Packing List: 1 * Nuclear Radiation Detector 1 * Cable 1 * Manual