Armasight Spark Kit includes Spark CORE Technolgy night vision multi-purpose monocular and goggle kit for hands-free usage. Spark is a rugged lightweight Multi-Purpose Night Vision Monocular that can be Hand Held, Camera Adaptable, Head/Helmet Mounted or Weapon Mounted. Armasight Spark is based on “single tube/single eyepiece” concept where independent use of each eye maximizes the ability of the user to operate under a wide range of low light conditions while reducing the risk of temporary night blindness typically associated with night vision goggles. A built-in Illuminator allows you to see clearly even in total darkness. Spark can be used as a long range Night Vision Spotter in conjunction with state of the art 3x A-focal lens. Armasight Spark is everything outdoorsman, fisherman, tactical shooter, or hunter could ask for. Limited Two-Year Warranty Specifications: Generation: CORE Technology Resolution: 45-55 lp/mm Additional Accessories: Headgear (included) Magnification: 1x, Optional 3x Lens System: F1.7, 35mm FOV (°): 30 Exit Pupil (mm): 8 Range of Focus (m): 0.25 to infinity Diopter Adjustment: +5 to -5 Eye relief (mm): 20 Environmental Rating: Water Resistant Infrared Illuminator: Yes Power Supply: CR-123 Lithium (1) 3V Battery Life (hours): 40 Operating Temperature (°C): -40 to +50 Dimensions (mm/in): 159 x 49 x 82 / 6.3 x 1.9 x 3.2 Weight (kg/lbs): 0.37 / 0.8