ShotMarker is an electronic target that precisely measures point of impact and velocity at any range. Sensors attach to the corners of your existing wood or aluminum frame and detect the supersonic shockwave of a bullet as it travels through the target. Shots are displayed and scored within 2-4 mm in real time on any smartphone or tablet. At $799, ShotMarker is the first affordable acoustic e-target ideal for personal practice, professional training, and competitive long range shooting events. (less)