Product Features: 1. 【High Sensitivity】The nuclear radiation detector adopts professional Geiger counter and advanced GM tube as the core sensor, which can accurately detect β, γ and X-rays, updated every second. Radiation detector detection range: 0.08~50mSv/hr. 2.【Sound and Light Alarm】Whether the personal radiation detector screen is in sleep state or working state, when the detected radiation dose exceeds the alarm threshold, the Geiger counter dosimeter will emit a loud sound and flashing screen alarm. All-round care for your and your family's health. 3. 【Low Energy Consumption-Oled Display】Built-in powerful rechargeable lithium battery, the nuclear radiation detector only needs to be charged for 2-3 hours, and the display can continue to measure continuously for 50 hours after it automatically hibernates at work. 4.【PEN CLIP DESIGN】This Geiger counter is the size of a pen, compact and convenient, you can clip it anywhere you want. This radiation detector can provide you with 24 hours all-round detection. 5. 【Wide range of applications】 This radiation dosimeter is widely used in home renovation, radiation exposure manufacturing enterprises, health, nuclear laboratories, nuclear power plants, building materials, petrochemical, geological census and other environments where ionizing radiation environment exists. The radiation dosimeter is the ideal choice for families, hospitals and workplaces. Product Parameters: Detection counting: 48mm Geiger counting tube Measuring range: 0.08uSv/h-9999uSv/h Working environment: -20~50℃. Humidity <95%RH without condensation Battery capacity: 400mah Endurance: 12-15 hours Charging time: 1 hour Charging method: USB-type-c Product Size: 16*27*105MM Body material: plastic style plastic Screen size: 0.96 inch TFT color screen Package list: Detector *1 Charging cable *1 Packing box *1