Features1Building Detection: This geiger counter can be used to detect radiation in building materials and marble. Building materials may contain natural radionuclides, and they can pose a huge threat to your health. 2Jewelry Detection: Nuclear radiation detector can be used to detect necklaces, rings or other jewelry. Precious metals and stones can have high radiation levels, especially zirconium, which is the most commonly used in jewelry. 3Food Detection: If grown in a contaminated area, it is sure to accumulate radiation.Geiger Counter can check the radiation safety of food (especially mushrooms and berries) and enjoy safe cooking. 4High Accuracy: This radiation detector meter detects B, y and X rays with high sensitivity, high accuracy and minimal error; data display is clear and easy to read; compact and portable. 5Rechargeable Battery: The radiation dosimeter is powered by a 1300mAh lithium battery, USB rechargeable, and can be used for indoor and outdoor radiation detection and monitoring, and other similar environments.SpecificationItem Type: Geiger CounterMaterial: ABSSize: Approx. 13.5 x 7 x 2.3cm/5.3 x 2.8 x 0.9inDetection Type: B, y and x RayEnergy Range: 20kev-3.2mev30% (137Cs-)Sensitivity: 80cpm/uSv (Co-60)Test Accuracy: 0.01uSv/hReal Time Range: 0-999.9uSv/hAccumulation Range: 0-9999msvReal Time Error: 10%Average Error: 3%Battery: 2 x 14500 1300mAh Lithium Battery (included)Plug: USB CableUse: Nuclear Radiation DetectorGross Weight: Approx. 246g/8.7ozPackage List1 x Geiger Counter 1 x Manual 1 x USB Cable 2 x Battery