Item Description: This Visionking SCS 6x25 range finder can be used to measure target distance, target height in relation to your eye level, and viewing angle between your line of sight to the target and horizontal. It is an upgraded model with added target height measurement. Specification: Item: 6x25 SCH range finder Magnification: 6x Objective Lens (mm): 25 Prism: Bak4 Roof Prism Focus System: Eyepiece Lens Coating: Muti Coating Exit Pupil: 3.8mm Eyerelief: 12mm Field of View at 1000 m: 122m Distance measured: 15 m to 600 m:16 yds to 660 yds(for vertical object can measure further) Accuracy: Normal condition +/- 1 m +/- 0.1% Display: LCD Indicator Power Source: 3V CR2 battary X1(not included) Dimensions: 115x75x45mm Weight: 180g Measurement Pattern: Semiconductor laser measurement(harmless to eyes) Laser Peak Output Power: 33W max