Nikon 8397 ACULON AL11 Laser Rangefinder At 3.6"x2.9"x1.5" in size, the ACULON Rangefinder is Nikon's most compact laser rangefinder, making it easy to take along wherever you go An uncluttered, easy-to-read screen displays ranges in 1-meter/yard intervals;Eye Relief :18 mm Class 1 laser product, power output not exceeding .0975 milliwats Measurement Range 6-550 yds.Use:Gun hunting,bow hunting,target shooting