Heavy-duty timing light displays tach, advance, dwell and voltage. Designed to be used with all 12 Volt negative-ground vehicles as well as vehicles with distribution ignition systems (DIS). Slim, 90°-rotating barrel allows access to the most difficult-to-reach timing marks. Easy-to-read backlit LCD. Detachable 6-ft. leads connect timing light to battery and ignition system. Includes durable carrying case. Model #5568.