[Professional Radiation Detection] Equipped with professional Geiger counter and advanced G M tube as the core sensor, this detector accurately detects β, γ, and x rays, providing real time updates every second. [Reliable Alarm System] It's a portable radiation detector that can measure radioactivity efficiently and effectively. When the radiation dose exceeds the alarm threshold, the Geiger counter emits a loud sound and the screen flashes, ensuring comprehensive care for and the well being of your family. [Compact and Portable] Its compact size makes it easy to carry, and its user-friendly interface makes it easy to use even for those with no prior experience. This radiation dosimeter is small and convenient, allowing you to carry it wherever you need to perform radiation detection, ensuring your safety. [Wide Range of Applications] This real-time monitoring device provides instant readings, meaning you can react promptly. Suitable for use in home renovations, radiation production enterprises, nuclear laboratories, nuclear power plants, construction materials, petrochemicals, geological surveys, and more. Detection and counting: 48mm Geiger counting tube Measuring range: 0.08uSv/h~9999uSv/h Working environment: -20~50°C; humidity 95%RH, no condensation Battery capacity: 500mah Battery life: 10-18 hours Charging time: 1 hour Charging method: magnetic wire charging Screen size: 20-inch TFT high-definition full-viewing color screen note: The actual product may have slight color differences or differences, which does not affect use. Material: plastic colour: A-Black Package Contents: 1 x Geiger counter 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.