Radiation Meter, Manufacturer Warranty Length 1 yr, Battery Voltage 1.5V, Number of Batteries Required 4, Beta Energy Sensitivity 200 keV, Maximum Dose Rate 1,001 uSv/hr, Minimum Dose Rate 0.0001 uSv/hr, Digital Display Screen Type LCD with Backlight, Display Type Digital, Measuring Units CPM, CPS, MeV, uSv/hr, Batteries Included Yes, Battery Size AA, Accuracy less than 10 Percent (Less than 500micron Sv/h), less than 20 Percent (Less than 600micron Sv/h), Alpha Energy Sensitivity 4 MeV