Ok. So once you activate it Can you leave it on all season like that or will it only last 90 hours?

Sorry to be a pain with all these questions.

They turn off and on by passing by a magnet, like someone else said. Not sure why you would want to leave it on...it comes on when you shoot it.

I have two packs of Tracers that I am going to put in the classifieds if you are interested. New and still in the package. you can pm me if you are interested. They are for alums and beman carbon hunters and I don't shoot either anymore.

The Tracers are no doubt a better choice then Lumenocks, but I prefer the new Firenocks over any of them.

By leaving it on I mean activated. Not lit but I don't want to have to hold it up to the magnet and make it flash every time.

They work great for me so far. The Easton Tracer knocks compared to the Luminnoks (sp?) are a lot better because of the on / off feature, their a lot brighter plus you can put them into the sleep mode when traveling or after the season.