Leupold BX-4 Range HD Gen 2 Features TBR/W technology provides ballistically calculated ranges for extremely accurate shots at longer distances and steeper angles including a wind hold point for a 10 mph crosswind at a 90 degree angle out to 800 yards so a hunter gets an actionable firing solution instead of a raw number. Bow Mode uses the TRIG function as a set-it-and-forget-it feature accurate to roughly 70 yards on angles under 20 degrees giving Western spot-and-stalk hunters and tree-stand archers a 10-ring level of ranging accuracy. Last Target guarantees the rangefinder identifies the farthest object along the laser s path preventing inaccurate readings caused by rain snow or fog that might otherwise range obstructions in front of the animal. Interchangeable Form-Fit eyecups come in three sizes letting the shooter select winged eyecups to block stray light medium eyecups for all-around comfort or low eyecups designed for glasses wearers. A built-in 1/4-20 rotatable tripod adapter port makes mounting to a tripod simple and easy-grip standoffs help locate the buttons through thick gloves while preventing accidental activation. At 37 oz with a CR2 battery a 14mm eye relief and a diopter adjustment range of plus or minus 3.5 the BX-4 Range HD Gen 2 is guaranteed to perform for life with Leupold committed to repair or replace it for free. Leupold BX-4 Range HD Gen2 Specifications Brand: Leupold Model: BX-4 Range HD Gen2 Magnification: 10x Objective: 42mm Color: Shadow Gray Field of View: 334 ft @ 1000 yds Eye Relief: 17mm Close Focus: 13 ft Max Distance: 4000 yds Display: OLED Battery Size: CR2 Diopter Adjustment: -3.50 / +3.50 Weight: 37 oz Waterproof: Yes Fogproof: Yes Available At: GrabAGun