Use the SSG / BSN 1171525 Wireless Shotclocks and Controller for an easy and portable way to keep the game going. This set includes bright LED numbers visible within 300-feet and a wireless design that is convenient for a variety of settings. A built-in battery and 4-user programmable wireless frequency function makes it easy to use and functional for any game. * Counts up or down from 1 to 99 seconds * 7.9-inch LED numbers visible within 300 ft. * 4 user-programmable wireless frequency settings * Built-in rechargeable battery * Clock dimensions: 10.2L x 15.6W x 23.6H inches