Features: BDX(TM) Ballistic Data Xchange capable, providing your BDX riflescope with an automatic illuminated holdover dot through Bluetooth pairing Revolutionary LightWave DSP(TM) Technology for the fastest and longest distance range finder engine HyperScan(TM) Technology provides 4 range updates per second in scan mode while RangeLock(TM) reports the last range result when ranging distant targets Embedded Applied Ballistics Ultralite with bullet database and support for G1/G7 Low Energy Bluetooth 4.0 for synchronizing up to 25 custom ballistic profiles between the free SIG Ballistic App and rangefinder Advanced OLED display provides a smaller, extremely precise targeting circle along with milling features and ballistic info including holdover angle Line of Sight or Angle Modified range in addition to full ballistic holdover and windage results in MIL or MOA Lumatic(TM) Display automatically calibrates display brightness to changing ambient light condition Compact, lightweight magnesium housing with binocular style eyecup and diopter adjustment Free downloadable SIG BDX App for your smartphone, iOS and Android are supported Covered by SIG SAUER's INFINITE Guarantee(TM) and Electronics Limited Warranty, Specifications: RANGE: Up to (1500 Deer)(2000 Trees)(5000 Reflective) BATTERY: (1) CR2 COLOR: ODG RETICLE: Circle OVERALL LENGTH: 5.75 in OVERALL WIDTH: 5 in HEIGHT: 2.5 in WEIGHT: 31 oz DISPLAY TYPE: OLED ILLUMINATION SETTINGS: Automatic Adjustment FIELD OF VIEW: 320 feet at 1000 yards EYE RELIEF: 18 mm OBJECTIVE LENS DIAMETER: 42 mm