Profile: Opti-Logic Corp. specializes in distance measuring equipments and electronic products, Our product line includes xl & LH series, binoculars, gulf series and replacement of batteries. Our XL laser rangefinder is an easy-to-use instrument designed for hunting, utilities, construction, and many other distance measurement applications. The XL laser rangefinder allows rapid, accurate determination of distance to an object in a matter of seconds using one button operation and "Red-Dot" technology for easy sighting. The instrument has a durable non-reflective rubberized coating and it is nitrogen filled which makes it fully waterproof.