●Model #173805 - RX-1600I Rangefinder, TBR/W ●True Ballistic Range / Wind (TBR/W) technology provides ballistically calculated ranges for extremely accurate shots at longer distances and steeper angles. It can also generate a hold point for a 10-mph wind at a 90-degree angle out to 800 yards. ●Bow mode uses the distance and the angle of a shot to calculate a ballistic equivalent to the target for more accurate uphill and downhill archery shots. ●LED displays use bright red characters and have adjustable brightness setting. This display technology also enables best in class light transmission for use in low light conditions. ●Last Target mode ensures the rangefinder reads the farthest target in the lasers path, so grasses and twigs dont interfere with an accurate range.