100% new and high quality It uses precise optics and digital technology to measure distances. Light weight and pocket size Two modes of operation: Green Mode and General Mode. A safe device of distance measuring, without any energy radiation. Material: plastic Color: white There is no any damage and destruction to the human body in the activity of distance measurement. 7 times magnification with 462 ft. field of view at 1000 yards The general mode can be used in other situations, it can calculate the distance between you and the target you desired Note: Do not use this golf range finder to observe the sun, or your eyes will be caused permanent damage For Green Mode: Pre ADJUST / ON button to enter Green Mode directly Align the base line on the screen with a level on the green Pre ADJUST / ON button to lower the scanning line to the top of flag Then comes out the distance in yards For General Mode: Pre Mode button to switch to General Mode Enter the height of the target and pre MODE button to read the min. distance you can measure Align the baseline on the screen with the base of your target Pre ADJUST / ON button to lower the scanning line to the top of target Then it indicates the distance between you and target Lens: 28mm; Eyepieces: 16mm; Resolution: 13 inch ; Magnification: 7 times ; Farthest test distance: 930 yards ( one yard = 0.914 m ) Angle: 7.8 Degree; Power supply: two button batteries cr2033(