The Range Finder is an advanced laser range finder system that rapidly provides an accurately measured distance out to 600m.It features 6 x magnification, multi-coated optics, +/- 1 yard accuracy, easy finger-tip operation and through-the-lens distance display.The Range Finder is adapted with the latest digital circuit design and optical system that is superior to other models in lens quality and reliability.Ranging distance15-600m.Semiconductor laser (harmless to eyes) ranging method.LCD display.Effective objective diameter 24mm.Eyepiece focusing.Requires CR2-3V battery, included.Size (H)6.9, (W)11, (D)3.9cm.Weight 165g.