Excellent product able to see the strobe in bright sun light and after timing you can check how much vacuum advance there is Have used it on several different cars and trucks has yet to let me down
This timing light is JUNK! The bulb stopped working 13 months into ownership and I've only used it THREE TIMES. Do you think Sears would help?? NOPE! BUYER BEWARE! NEVER AGAIN!
Big Mike at the Washington square Mall was super helpful!