1.  Radiation Detector :    0.5" d x 1.5" CsI(Na) with PMT 
2.  Energy Range : 30 keV - 3 MeV 
3.  Display : Intense, large LED 
4.  Power : 2 AA Batteries 
5.  Battery Life : 5,000 hours 
6.  Calibration : Automatic 
7.  Dimensions : 3.9" x 2.7" x 1.2" 
8.  Weight : 0.4 lbs (6.4 oz) 
9.  Environment :    Driving rain, -10° F - 122° F, 5 ft drop onto concrete, operates in high RF environments