Features: This nuclear radiation detector uses a composite GM tube as the core sensor, with small error and high accuracy, reaching 0.01 USV/h, ensuring accurate measurement. The professional Geiger counter has a built-in sensor that easily detects radiation, with a large measurement range, high accuracy and long service life. The compact and portable Geiger counter allows you to put it in your pocket and carry it with you. The user interface is simple, clear and user-friendly. It has multiple charging methods and can be operated through USB port and battery, making it convenient and easy to use. It is widely used in material testing and radiation testing, and is very suitable for daily use, hospitals, industry, etc. Package Included: 1 x Radiation Detector Specifications: Material: Plastic Size: 11x7x3cm/4.3x2.76x1.2 inches Color: White and Black Note: Please allow 1-3 cm error due to manual measurement. Please make sure you don't mind before bidding. Due to differences between monitors, images may not reflect the actual color of the item.