The Sig Sauer SOK6K106 refers to the Sig Sauer KILO6K HDX 10x42mm Ballistic Rangefinding Binocular. These premium, rugged binoculars combine high-definition glass with a powerful laser rangefinder and real-time ballistic calculations. FEATURES : Optics: 10x magnification with a 42mm objective lens and an upgraded HDX lens system for excellent light transmission and clarity. Ranging: Gen II Lightwave DSP Ranging Engine provides precise reads up to 3,000 yards on deer and up to 6,000 yards on reflective targets. Ballistics: Built-in Applied Ballistics Ultralight (ABU) and onboard environmental sensors (temperature, pressure, humidity) to calculate exact holdovers. Connectivity: BDX 2.0 Bluetooth allows it to pair with mobile apps (like onX Hunt and BaseMap) to drop remote waypoints and sync with compatible riflescopes.