Eliminate the need to run control cable to each clock. 7.9quot H LED numerals are visible within 300 feet. Extremely reliable and easy to use shot clocksnbsp which are powered by built in, rechargable batteries or 110v AC power.nbsp 4 user programmable wireless frequency settings.nbspCounts up or down from 1 to 99 seconds. Gametimer numbers are 4.7quot.nbsp Loud, built in horns included. 2 100' data control cables included.nbsp Recommended for portable use only. Each clock measures 10.2quotL x 15.6quotW x 23.6quotH. Weight 12 lbs per clock. Stand sold separately.nbspnbspMay only be used with our 1235173 Ultimate Wallmount Scoreboard. nbspFornbspindoor use only.