Effective range: 1000 yards down to 50 yards. Dimensions: 3.75"(Length) x 2.0" (Width) x 1.5" (Height) Magnification: 7x This Mini Digital Range Finder will let you quickly and accurately measure your distance from the golf pin. It magnifies your field of view five times and uses precise optics and digital technology to measure distances. An LCD screen is super-imposed on the viewfinder and shows the distance to the pin It is perfect for training and improving your game. The Digital 7x Golf Range finder uses precise optics and digital technology to measure distances. They are two modes of operation: Green Mode and General Mode. The Green Mode is designed especially for golfers. You can measure the distance from where you stand to the cup. General Mode The General Mode can be used in other situations. Net Weight: 2.82 oz. Superior lens coating protects against and scratches. Align the digital range marks with the flag pin to automatically display the distance in yards. 7 x magnification with 462-foot field of view at 1,000 yards. HOW TO USE: Press the ON / Adjust Button. Aim the base line on the screen on a level with the green. Press ON / Adjust button to lower the location of horizontal line to the top of the pin. The number displayed on the the top of the screen is the distance in yards. Package Content : 1 x Digital Golf Range Finder 1 x Manual In English 1 x Wrist Strap / Lanyard 1 x Neoprene Carrying Case With Belt Loop 2 x Lithium Batteries -2032 1 x Cleaning Cloth Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.