Product details:

Summit Racing SUM-G1059-13: Timing Light, Self-Powered, Black, Inductive Pickup, Multi-spark Compatible, Two D Batteries Power Supply - Summit Racing self-powered timing lights provide an affordable and accurate way to check your engine's timing--without all the cords! Battery-operated timing lights are easy to use on any spark ignition engine, including those using a magneto. Their Xenon bulb produces a strobe powerful enough for visibility, even in the brightest sunlight. Enjoy performance tuning with economical, self-powered timing lights from Summit Racing .