Features: Real-time Detecting&Total Dose: It can detect radiation dose rate in real time and record cumulative dose value at the same time. Two Power Supplys Ways: This detector supports battery and USB two ways of power supplys. You can using 3*AAA batteries or USB cable recharging to supplys power. (Battery NOT included.) Various Screen Display Functions: You can adjust the alarm reading value, Chinese and English switching, screen backlight, real-time dose rate curve display function and so on according to your needs. Built-in Data Storage Card: Some data such as accumulated dose value, dose rate alarm reading value and dose alarm threshold value will not be lost after power failure. High Performance Chip: It adopts 32 bit processor, strong anti-interference ability and high detection precisions ranges. Wide Applications: This radiation tester can be widely used in decoration stone testing, industrial nuclear pollution testing, geological survey testing and so on. Easy to Operrate: You can enter the setting interface by one button to adjust the alarm preset value, time, Chinese and English switching backlight mode, curve display, particle sound switch and other functions. Specifications: Material: ABS Dose rate ranges: 0.1μSv/h~10mSv/h Dose ranges: 0.00μSv~10Sv Sensitivity: >1cps/uSv/h (under the source of Condition Co60) Relative intrinsic error: <10% (at 1mSv/h) Power supplys: 3 * AAA battery (NOT included) or USB cable (included) Power consumption: <150mW Package size: 160 * 60 * 25mm / 6.3 * 2.4 * 1.0in Package weight: 160g / 5.6ounce Packing list： 1 * Radiation Detector 1 * USB Cable 1 * User Manual