Features: The GC02 nuclear radiation detector is exquisitely design, small in size, and highly portable, great tool for detecting nuclear radiation. Use high-precised counters to accurately detect ionizing radiation (gamma radiation intensity, X-rays, etc.). Equipped with 1.5inch LCD screen, the interfaces is clean, clear show real time values, average values, largest values, and cumulative values. Build in 850mA rechargeable battery, with battery service life of up to 6 hours. It can also set alarm values, customize sleep and shutdown times, and support switching between 8 languages. Equipped with timed monitoring function and historical view, it can record 10 set of data without loss. Specifications: Material: Plastic Color: black Size: approx. 106.5x44.5x25mm/4.19x1.75x0.98inch Model Name: GC02 Nuclear Radiation Detector Screen: 1.5inch LCD Screen Battery: 850mAh Package Includes: 1 Piece Nuclear Radiation Detector 1 Piece Hanging Rope 1 Piece Charging Cable note: Please allow 1-2cm errors due to manual measurement. Please allow for slight color differences due to different display resolution.