Steiner's BluHorizons 10x42 Binoculars are designed to be the perfect lightweight binocular for travel or just about any recreational activity. What makes the BluHorizons unique to other sets of binoculars is the AUTOBRIGHT™ technology found in the lenses. The lenses of the BluHorizon binoculars adapt to the ambient lighting, allowing you to see more at dawn and dusk without having to deal with the abusive glares from the sun when looking through the BluHorizon 10x42s at high noon. Features of the BluHorizon 10x42 BinocularsAutobright™ sunlight adaptive lens technology automatically adjusts brightness. Waterproof housing allows use in inclement weather, on boats, or at the beach. Rugged construction means these binoculars are ready for any adventure. Textured outer armor ensures a positive grip on the binoculars. Ergonomic eyecups block wind, rain, snow, and side light when viewing. Steiner 10x42 BluHorizon Binocular 2345