AQT1031 Features: * Multi-purpose unit * Hand-held monocular * Hands free goggles (with optional head gear or helmet mount) * Night-time photography (with use of optional camera adapter) * Compact yet rugged design * Weapon-mountable (with use of the optional weapon mount) * Waterproof * Intensifier Tube: 2+ * Resolution: 40-45 lp/mm typical * Magnification: 1x * Lens system Element: F1.2, 25 mm * Exit Pupil: 14 mm * Eye Relief: 25 mm * Eye use: Left or Right * FOV: 40 * Range of focus : 0.25 m to infinity * Bright Light Indicator: Yes * Diopter Adjustment: -6 to +6 * ABC- Automatic Brightness Control Cut-off to Protect IIT: Yes * Controls: Digital * Infra-red Illuminator: Built-in rotary select-flood and spot * IR Illumination Range: 20 m * IR Indicator: LED ON/ Battery Low * Environmental rating: Waterproof 20 m, 1 hour * Operating Temperature: -40 +50 C * Storage Temperature: -50 +70 C * Flip Up Headset with Automatic System Off: Yes * Mil-Spec 810 Standards: Complies * Waterproof: 20 m for 1 hour * Weight with Battery: 0.7 lb Specifications: * Battery Life without IR ON: 30 hrs. (AA), 60 hrs. (3 V, Lithium) * Battery Life with IR ON Continuous: 30 hrs. (3 V, Lithium) * Power supply: (1) 3 V Lithium, or (1) AA Alkaline Dimensions: * Width: 50 mm * Dimensions: 2.7"" H x 2"" W x 4.9"" D