Total Darkness IR System                                               yes    
IIT Generation                                                               1+    
Resolution                                                                    40 lp/mm    
Magnification                                                                  5x    
Lens System                                                                  f1.2,90mm    
FOV                                                                              20    
Range of Focus                                                             20 m to infinity    
Diopter Adjustment                                                       -5 to +5    
Automatic Brightness Control                                          no    
Automatic Shut-off System                                             yes    
Infrared Illuminator                                                       yes(focusing)    
IR Indicator                                                                  yes(LED indicator)    
Low Battery Indicator                                                     yes(LED indicator)    
Power Supply                                                                 1 X 3 V CR123A type battery    
Battery Life                                                                   20 w/o IR    
Environmental Rating                                                     Weather and fog resistant    
Operating Temperature                                                   -40 to +50 C    
Storage Temperature                                                      -50 to +70 C    
Dimensions                                                                    225X150X60mm(8.9”X5.9”X2.3”)    
Weight                                                                          1.5kg/3.3lbs    
Warranty                                                                       1years