It has pinsensor technology which gives fast measurement with 1 yard accuracy, together with Pinsensor technology to accurately measure overlapping subjects, locking range up to 200 yards, perfect for measuring golf flags, you can easily switch units between meters and yards. It also has vibration function. So when the flag distance is locked, the machine will vibrate automatically, if you don’t need this function, you can turn it off as your need.It has three modes. Ranging mode, Flag locking mode and Speed mode. So it supports Support speed measurement, short press the power button after targeting the moving object,not only that, the speed data will be displayed on the screen.Magnification x objective is 6x 22mm; range measure accuracy is ±1yard,speed measure accuracy ±5km/perfect for carrying while golfing or hunting, or for measuring and surveying without extra weight or bulk. It has built in rechargeable battery which provides long battery life.