Manufactured with high definition, aspherical telescopic lens technology, the DBAL-D2 features a 2Adeg to 30Adeg adjustable illumination beam. This highly collimated beam significantly enhances night vision performance and offers an eye-safe means of illuminating distances greater than 1000 m. 2. FeaturesFully Adjustable Windage / ElevationQuick Release HT MountCo-Aligned Visible & IR Aiming LasersIR LED IlluminatorPowered By: One CR 123A BatteryRemote Cable PortActivation / Mode Selector SwitchIntegrated Activation SwitchDimensions: 4.6"x3.4"x1.8"Weight: 8.6oz