Features 500m Measurable: This range finder offers a measuring distance of 5 to 500m with high accuracy of 0.5 yards, making it practical and suitable for almost any golf course. Slope Function: Utilize the slope function to calculate the slope and obtain accurate yardage, helping you choose the right club for your shot. Ideal Golf Tool: This golf rangefinder is small, easy to use, and helps you lock on to the target before each shot, making it the perfect choice for golf enthusiasts. Diopter Adjustment: With a diopter adjustment function around 5D, you can set the rangefinder according to your vision for optimal clarity. 6X Optical Magnification: Benefit from the 6X optical magnification function, which helps you see shots clearly, enhancing your overall golfing experience. Item Type: Mini Prism System Material: Optical glass and aluminum alloy Constant: 0mm/-30mm Effective Diameter: Approx. 25.4mm / 1in Application: Tunnel, subway, mine, highway detection, suitable for 1 x Mini Prism 1 x U Shaped Box 1 x Adapter 1 x S Hook 1 x Lid 1 x Storage Bag Package List 1 x Mini Prism 1 x U Shaped Box 1 x Adapter 1 x S Hook 1 x Lid 1 x Storage Bag