Nikon Laser Range Finder 800S Measurement range 10-730m/11-800 yd, Magnification 6x, Effective objective diameter 21mm, Actual field of view 6.0°, Exit pupil 3.5mm, Eye relief 18mm, Dimensions (L x H x W) 126 x 72 x 37mm, Weight (excluding battery) 210g, Power source CR2 lithium battery x 1 (DC 3V), Auto power shutoff function equipped (after 8 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.