Features: 1. It adopts a compact and portable user interface, which is simple, clear, easy to use and user-friendly. 2. Geiger radioactivity detector has the characteristics of wide measuring range and long service life. It can be used for radiation detection and monitoring in indoor and outdoor and other similar environments. 3. The nuclear radiation monitor responds quickly to radiation, and will alarm in time in high-risk environments. The instrument enjoys a high flexibility and can measure the environmental background. 4. Widely applied in the individual safety protection monitor and radioactive indication for work personnel in the following fields: nuclear power plant, accelerator. 5. The handheld nuclear radiation detector is compact and portable. The unit of the detector is Sv/h. Notice: *Actual color may be slightly different from the image due to different monitor and light effect *Please allow 1-3cm deviation due to manual measurement Description: Package Size: 19*9*7cm Power supply method: Plug-in use or 3 x AAA battery ( Not included ) power includes: 1 set x Vindor Geiger Counter