BESI 130 Self - Powered Timing Light ReviewbP PP ESI 130 Self - Powered Timing Light PFor 2 or 4 cycle engines, all ignition systems, accurate up to at least 14,000 rpmPProtective sleeve withstands high temperatures (1200 Fahrenheit)PStandard lead length 4 feetPBright flash at all speedsPBatteries includedP