Wireless communication up to 20FT; Immediate score display, hundredths of a second accuracy; Split and elapse times display; Remote push-button change and selections; Choice of automatic or manual drill restart; Choice of countdown or random drill start; Control sound and light response; Set of 4 changeable target cards for each target; Usable as standalone targes; Activated by both red and IR lasers; Scrolling through all the scores; Change and set drill parameters; Extended range; Pair and define multiple target groups; The multi-target training system is built to work with SureStrike Laser cartridges, both red and infrared; This item includes: 5X Interactive Multi Target Training System (i-MTTS) target bases, System Controller, AAA batteries for entire system, Interchangeable targets sized 3-5 inches, User guide