1. The -screen display makes it easier to read test results, and the buttons are easy to operate.Comprehensive detection for more secure safety.It can detect all radioactive nuclides such as hard B-rays, y-rays, x-rays, hydrogen pollution, , jewelry, jade, antiques, furniture,diatom mud, iodine 131, iodine 125, 241, etc 2. The shell is made of high-quality ABS, which has excellent heat resistance and cold resistance, high strength and excellent toughness. 3. High sensitivity, wide measuring range and long service life. 4. It can meet the needs of detection, substation detection, ambient temperature/humidity detection, mobile signal tower detection and so on. It can also be applied to material inspection, environmental testing, radiation protection, radiopharmaceutical screening, etc. 5. Use the mute, alarm, particle sound selection button, test, average reset to retest the selection button, the backlight can be turned on or off. Detection Technology: G-M detection technology Detection Range: , , X-ray, temperature and humidity Display Mode: TFT screen + backlight Energy Range: 20kev~3.2mev 30%(137Cs-) Sensitivity: 80cpm/Sv/(Co-60) Test Accuracy: 0.01 Sv/h Real-time Range: 0-99.99 Sv/h Accumulation Range: 0-99.999 /h Real-time Error: 10% Mean Error: 3% Temperature and Humidity Detection Power Supply: 3*1.5V dry batteries or 3*1.2V rechargeable batteries(not included) Charge Input: USB 5V 2A Battery Time: 4 hours Product Size: 105 x 70 x 30 mm Colour:black Material:ABS Language: Chinese-English-Japanese-Korean(Asian), English-Russian-Ukrainian-Polish Press the M key to enter or exit the settings menu. Press the L key to confirm or exit the setting . Press the R key to select setting up and down. Press the L+ R keys simultaneously to clear the accumulated detection value. Package Contents: 1 x Geiger Counter Radiometer Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.