I got the spray can (red). Works great on my light which is a sealed beam.
Red Dykem
This is the light I use. There is no reason to use a 1 or 2 million candle power light. These 50,000-100,000 candle power lights will light up a critter way farther than you can shoot it.
http://www.able2products.com/Update/08_0335.htm
We use these for deer spotlight counts as well. If you sit and shine a spot for 20 minutes with 2 million candle power light, you may be walking to the next stand.
You won't have any problem with these, and they are pretty tough, and don't wear you out holding it like some of those heavy lights.
It has a replacable bulb that you buy at most auto parts stores if it does blow out. I have a bulb that I have put the red dykem on, and the normal clear one. That way I can switch them out depending on what I need it for.
