Generation 2+ Range of Focus 0.25 yard/m to infinity Magnification 1 X Resolution 40 - 45 lp/mm FOV 13 ° Total Darkness IR System Yes Diopter Adjustment No Automatic Brightness Control Yes Bright Light Cut-off Yes Infrared Illuminator Detachable IR Indicator No Low Battery Indicator No Power Supply 1 x 3V (CR123A) Battery Life 50 hours Environmental Rating Water resistant Operating Temperature -40°F to 122°F/-40°C to 50°C Storage Temperature -58°F to 158°F/-50°C to 70°C Dimensions 7.7" x 3.5" x 3"/195 mm x 89 mm x 76 mm Weight 1.85 lbs What's In The Box? IR850-B1 Warranty Card Instruction Manual Lens Tissue One Lithium Battery (CR123A) Remote Control Unit Mil-Spec Hard Case