We are offering High-performance laser rangefinder for distances up to 1, 100 meters. Quick and easy-to-use, it is equipped with Nikons Target Priority Switch System that allows you to switch between two measurement modes: First Target Priority mode gives priority to the nearest target and is just the thing for golf. Distant Target Priority mode gives priority to the furthest target and is ideal for hunting.Target Priority Switch System: select from two measurement modes. First Target Priority gives priority to the nearest target, and Distant Target Priority gives priority to the furthest target.Quick measurement.High-eyepoint design provides a clear field of view, even when wearing spectacles or sunglasses.Waterproof with O-ring seals and nitrogen gas for added resistance to harsh environments. (Not for underwater usage. The battery chamber is water resistant.)Fast, one-touch operation makes it easy to find the correct range.LCD screen with backlight enhances visibility in low-light.TECHNICAL SPECIFICATIONS: Magnification :7xObjective diameter : 25mmExit pupil: 3.6mmEye relief : 18.6mmReal field of view : 5.0 degreesDiopter adjustment : +-4 dpt.Measurement range : 10-1, 100m 11-1, 200yds Depending on weather conditions and objects to be measured, the measurement range may vary.Measurement accuracy :+-0.5m (yds) At distances shorter than 20m22yds or greater than 500m550yds., accuracy may not achieve +-0.5myd.Distance display : Four digits 10-999.5m (11-999.5yds): every 0.5myd 1, 000-1, 100m (1, 000-1, 200yds): every 1mydPower source : CR2 lithium battery x 1 (DC 3V): Auto power shut-off function equipped (after 8 sec.) The battery chamber is water resistant. You cannot use this product in the water.Dimensions (LxWxH) : 145 x 47 x 82mmWeight : 280g (excluding battery)