When speed is paramount, there's no substitute for a Rangefinding Binocular. The BX-4 Range HD TBR/W 10x42mm fuses Leupold's DNA engine and ballistics software with the optical performance die-hard hunters and shooters demand. Now you can spot and range targets without wasting valuable seconds switching between gear. The BX-4's high-contrast red OLED display delivers visible readouts in any light, and its edge-to-edge clarity makes glassing sessions easy on the eyes. The next time you're packing for a match or hunt, cut the excess. Take the BX-4 Range HD TBR/W. This time-saving combo of tech and glass is built around Leupold's proven Elite Optical System, delivering excellent dawn-to-dusk light transmission for a bright image when it matters most, elite-level glare reduction in harsh light, and the resolution and clarity you can count on in the backcountry. Compare it to others in its class, and you'll see a difference, especially in low light. But that's just half of what the BX-4 is all about. Its 10x magnification provides a large field of view for glassing in tight areas while still being powerful enough to make positive IDs from a distance. And when you finally spot your target, one press of the power button will tell you exactly how far to send your rounds. Backed by Leupold's Lifetime Optics Guarantee and the Two-Year Electronics Guarantee, the BX-4 Range HD is built for years of performance. 10x magnification 2,600-yd. maximum detection range Accurate to +/- 1 yard out to 125 yds. Elite Optical System offers excellent dawn-to-dusk light transmission High-contrast red OLED display gives you an accurate reading in any light True Ballistic Range/Wind (TBR/W) technology provides ranges for accurate shots at longer distances and steeper angles. It can also generate a hold point for a 10mph wind at a 90 degrees angle out to 800 yds. 100% waterproof and fogproof Rugged, lightweight polymer housing Oversiz