Detection items: Hard β, ƴ, X-rays in the environment Detector type: energy compensation type GM tube Energy response: 48keV~1.5meV Sensitivity: 0.25cps/usv/h (relative to 137Cs) Real-time value range: 0~99.99 usv/h Average range: 0~99.99 usv/h Cumulative value display range: 0~99.999 msv Resolution: 0.01usv/h Real-time value error: Less than 10% Average error: Less than 3% Unit: usv/h Multi-language: Chinese, English, Japanese, Russian Color: White Material: ABS Package Contents: 1X Nuclear Radiation Detector 1X USB charging cable 1X English Manual 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.