Range finders are usually either binoculars or watches, and both types offer different advantages. A watch range finder provides added functionality, such as date- and time-keeping, and fits on your wrist for added convenience. Other common features include score keeping, tracking the time for your round and even serving as a pedometer. Binoculars let you zoom onto your ball, letting you see details, such as a divot, that might not be obvious to the naked eye. Choose the design that best suits your game, and get out on the golf course to test it out.