No basketball arena is complete without these state-of-the-art LED indoor shot clocks. These portable shot clocks are 100,000-hour rated for maximum reliability. Shot clocks are easily programmed for any time between 0 and 99 seconds. Cable-controlled shot clocks include 35 feet of control cable per clock. These portable red super-bright LED style shot clocks operate independently from your basketball scoreboards. For stand alone use only.