Features 1. EFFICIENT PORTABILITY: This compact radiation tester is designed for easy carrying and delivers fast and precise detection of radioactivity in materials such as marble, providing accurate and reliable results. 2. VERSATILE FUNCTIONALITY: In addition to testing marble, it can also measure ionizing radiation and function as a Geiger counter, meeting a wide range of detection needs with high accuracy. 3. ALARM SYSTEM: Equipped with a responsive alarm function, it promptly alerts users with ble and visual warnings, delivering up-to-date radiation information for improved safety. 4. USER-FRIENDLY DESIGN: Featuring intuitive controls and a clear digital display, this radiation detector is suitable for both beginners and professionals, offering simple operation and convenience. 5. DURABLE CONSTRUCTION: Made from ABS material and subjected to rigorous quality testing, this radiation tester ensures long-term, reliable performance. Specification Item Type: Radiation Tester Material: ABS Weight: Approx. 66g / 2.3oz Battery: 1 x 9V 6F22 lithium battery or equivalent (not included) Package List 1 x Radiation Tester 1 x English Manual