[High-Sensitivity] The nuclear radiation detector uses a professional Geiger counter and an advanced tube as the core sensor, which can accurately detect gamma rays and X-rays, with updates every second. Radiation detector detection range: 0.08 ~ 50 mSv/h. [Sound and Light Alarm] Regardless of whether the screen of the personal radiation detector is in sleep or active mode, when the detected radiation dose exceeds the alarm threshold, the device will emit a loud ble alert and flashing screen alarm to ensure safety for you and your family. [Low Energy OLED Display] Built-in powerful rechargeable lithium battery; the nuclear radiation detector requires only 2-3 hours of charging and can operate continuously for up to 50 hours after full charge. [Pen Folder Design] The size of this Geiger counter is similar to a pen, compact and portable. It can be clipped to any desired location. This radiation detector provides continuous 24-hour monitoring. [Wide Application Scope] This radiation dose meter is widely used in environments with ionizing radiation, such as home inspections, manufacturing facilities involving radiation sources, healthcare, regulatory compliance, nuclear power plants, building materials, petrochemicals, and geological surveys. Ideal for families, hospitals, and workplaces. Material: Plastic Color: Black Package Contents: 1 x Geiger Counter Only the above package content is included; other items are not part of the package. Note: Light reflection and different display settings may cause slight variations between the color shown in the image and the actual item. Measurement error allowance is +/- 1-3 cm.