Trophy Ridge delivers one of the most innovative and easy to use bow sights with the Digital React Trio Pro Sight! This advanced bow sight utilizes two horizontal fixed .019 pins, a vertical React .010 pin, and features Trophy Ridge’s exclusive React Technology. The React Technology allows you to sight-in you bow in 4 easy steps: sight-in the vertical pin at 40 yards via the tool-less windage and elevation knobs, turn on the sight, enter the correct bow speed and dial in all distances, then sight in the 20 and 30 yard horizontal pins – after that, the react technology does the rest. This highly intuitive design greatly enhances accuracy as well as shooter confidence at virtually any distance. The Digital React Trio Pro Sight features an LCD readout that displays the distance of the pin in precise 1-yard or ½-yard increments to eliminate any guesswork, and can be illuminated with different colors. In addition, the Digital React Trio Pro Sight can store up to 5 different profiles based on various arrow and bow setups, and all adjustments can be made without the use of tools. Features of the Digital React Trio Pro Sight: Fast and easy sight-in procedure Enhances accuracy and shooter confidence at virtually any distance LED readout displays pin distance in 1-yard or ½-yard increments Can store up to 5 profiles based on various arrow and bow setups Trophy Ridge AS713DR19 Digital React Trio pro RH .19 .19 .10 RH Black Bow Sight AS713DR19