The Sig Sauer KILO2400ABS 7x25 SOK24701 is the world’s most advanced rangefinder with a range up to 2 miles. Download the free SIG Ballistics app on any smartphone and set up custom ballistic profiles for precise ballistic solutions. Ballistics data is sent from your smartphone to your device via Bluetooth. The OLED display is the most advanced on the market and automatically adjusts the brightness to the levels of light around to prevent your pupil from constricting in low-light. The Sig Sauer KILO2400ABS 7x25 features lenses are coated with an anti-reflective SPECTRACOAT to reduce reflections and provide excellent light transmission.