Feature 1Efficient and Portable: This nuclear radiation detector is compact and portable in design, and is capable of quickly and accurately detecting radioactivity in marble. 2Versatile Use: In addition to marble testing, it can also be used to measure Geiger counters and ionization metrology for a wide range of inspection needs. 3Accurate Alarm: With the alarm function, it can send out warning signals in time to ensure that users get the latest and accurate radiation information. 4User Friendly Design: Featuring easy to operate buttons and intuitive displays, it is ideal for both laymen and professionals. 5Reliable and Durable: This radiation detector is made of premium materials and undergoes rigorous testing and quality control for long term reliable use.Item Type: Nuclear Radiation DetectorWeight: 101g / 3.56ozMaterial: ABSBattery Type: Lithium ion battery (shipped with built in battery)Battery Model: 9V 6F22Battery Capacity: 1100mAhBattery Quantity: 1 .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 Nuclear Radiation Detector1 x English Manual