Feature: 1. SENSITIVE AND ACCURATE: The use of geiger muller tube counter can measure nuclear radiation, sensitive induction, to ensure the accuracy of the measurement results. Detection range from 0.08uSv‑50mSv 2. BETA GAMMA X RAY MONITOR: Combined beta, gamma, and X ray radiation detection, providing audible and visual alerts if radiation is detected 3. BATTERY POWERED: The nuclear radiation detector includes rechargeable batteries, can be charged via USB or car charger 4. COMPACT AND LIGHTWEIGHT: The pen designed geiger counter can detect radiation levels on any object or in any environment at any time, such as toys, antiques, building materials, furniture, decoration, food, etc. 5. SCRATCH RESISTANT ABS: Personal dosimeter adopt excellent ABS material, possess impact resistance, scratch resistance, environmentally friendly Specification: Item Type: Nuclear Radiation Detector Material: ABS Battery: 1 x Lithium polymer battery, Battery Capacity: 150mAh Detection Range: 0.08uSv-50mSv Sensor: 48mm Geiger counter Working Environment: Temperature: -20℃~50℃; Humidity: <95%RH No condensation Battery Life: 50 Hours(continuous measurement, screen sleep) Charging Time: 2 ~ 3 Hours Charging Interface: Type C interface(green light steady on when charging, full off). Package List: 1 x Detector1 x USB Cable1 x User Manual