10x42mm Binocular With SpectraCoatTM Anti-reflection Coatings for Superior Light Transmission and Optical Clarity - BDX 2.0 Including 8 Onboard Ballistic Groups - 6 Centerfire 1 Muzzle Loader and 1 Crossbow. Also Features QuickBOND for Rapidly Bonding the Rangefinder With Any BDX Enabled Sight - Embedded Applied Ballistics Ultralite With Bullet Database and Support For G1/G7 Drag Curves - Supports Applied Ballistics External For Pairing the KILO With a Kestrel or Garmin With Onboard Applied Ballistics Elite - Low Energy Bluetooth 4.0 For Synchronizing up to 25 Custom Ballistic Profiles Between the Free SIG Ballistic App and Rangefinder - Includes a SIG Carry Pouch and Neck Strap - MAGNIFICATION: 10X - OBJECTIVE CLEAR APERTURE: 42mm - CLOSE FOCUS DISTANCE: 20 ft - EYE RELIEF: 18mm - ANGULAR (FOV): 6.1