Radiation Survey Meter, Manufacturer Warranty Length 1 yr, Battery Voltage 9V, Number of Batteries Required 2, Calibration Certificate Type NIST, Battery Chemistry Alkaline, Battery Run Time 100 hr, Beta Energy Sensitivity 1 keV, Maximum Dose Rate 500 uSv/hr, Minimum Dose Rate 0 uSv/hr, Digital Display Screen Type LCD with Backlight, Display Type Digital, Measuring Units mR/hr, mSv/hr, R/hr, uSv/hr, uR/hr, Batteries Included Yes, Battery Size 9V. This item has been restricted from sale in the following state (s): []