Feature 1EFFICIENT PORTABILITY: This compact nuclear radiation tester is designed for easy carrying and delivers fast and precise detection of radioactivity in marble, providing accurate and reliable results. 2VERSATILE FUNCTIONALITY: In addition to testing marble, it can also measure Geiger counter and ionizing radiation, meeting a wide range of testing requirements with exceptional accuracy. 3ALARM SYSTEM: Equipped with a highly responsive alarm function, it promptly alerts users with warning signals, providing the latest and most accurate radiation information for enhanced safety. 4USER FRIENDLY DESIGN: Featuring intuitive buttons and a clear display, this radiation detector is perfect for both novices and professionals, offering easy operation and convenience in usage. 5DURABLE USE: Crafted from ABS materials and subjected to rigorous testing and quality control, this durable nuclear radiation tester provides long term and dependable performance for reliable use.Item Type: Radioactive testerMaterial: ABSWeight: Approx. 66g / 2.3ozBattery: 1 x 9V 6F22 li ion battery or batteries with the right voltage and connector(not included) .wang-edit-text{ font-family:'Arial' !important; } .wang-edit-text table { border-top: 1px solid #000; border-left: 1px solid #000; } .wang-edit-text table td, .wang-edit-text table th { border-bottom: 1px solid #000; border-right: 1px solid #000; padding: 3px 5px; } .wang-edit-text table th { text-align: center; }Package List1 x Radioactive Tester1 x English Manual