Laser rangefinders have become so widely used, they have become as much a necessity as binoculars. The hitch is, they're small and compact, making them quite susceptible to loss. Nikon knows this, and that's why they have come out with this Retractable Rangefinder Tether. It'll keep your rangefinder close at hand when you need it and silently out of the way when you don't. Works for just about any rangefinder or other small gear and is highly adaptable for other applications. Simply thread the split-ring through the tab-loop and your'e good to go. Clip the opposite end to your shirt, jacket or vest and go.