Nikon Laser Range Finder 550 AS Measurement range Distance:10-500m/11-550 yd. Angle: ±89° Distance display [Internal Display] Act (Actual Distance): every 0.5m/yd., (shorter than 100m/yd.) every 1.0m/yd., (100m/yd. and over) Hor (Horizontal Distance) and Hgt (Height): every 0.2m/yd., (shorter than 100m/yd.) every 1.0m/yd., (100m/yd. and over) Ang (Angle): every 0.1° (less than 10°) every 1.0° (10° and over) *Downward angle from the horizontal line: with display “-“ [External Display] Act (Actual Distance): every 0.5m/yd., Hor (Horizontal Distance) and Hgt (Height): every 0.2m/yd., Ang (Angle): every 0.1° Target system First target priority/Distant target priority switching system Finder Magnification 6x Effective objective diameter 21mm Actual field of view 6.0° Exit pupil 3.5mm Eye relief 18.2mm Dimensions (L x H x W) 117 x 69 x 45mm Weight (excluding battery) 210g Power source CR2 lithium battery x 1 (DC 3V) Auto power shutoff function equipped (after 30 sec.) Safety Class 1M Laser product (EN/IEC60825-1:2007) EMC FCC Part15 SubPartB class B, CE:EMC directive, C-tick, VCCI class B Environment RoHS, WEEE The specifications of the product may not be achieved depending on the target object’s shape, surface texture and nature, and/or weather conditions.