Laser Range and Angle Finder, Pocket size Harmless Laser to Eyes.measuring range of distance: 5m(Y)-400m(Y)-900m(Y)Range measure accuracy : +/- 1m(Y)Function of Measuring Angle: YesFunction of Scan : Yesmagnification :6xobjective lens size: 24mmEyepiece size : 16mmExit pupil diameter: 3.9mmfield of view: 7degreeDiopter Adjust Range: +/- 4Net Weight: 185gBattery: Lithium CR2 3vLow battery ...