*Floater*
Contributor
do it easy:Check out the Attitude from Princeton Tec
It's a tiny 3 LED light (not 3W, three separate LEDs). You are in no danger of blinding anyone underwater. I keep it in my toolbox for walking around after dark, but I have used it as a primary light on a few night dives. Let's just say it makes everything exciting. It doesn't have a mask strap, so you might have to convert your strap from the miniQ40. Burn time is rated at 150 hours (with alkaline?). I have NiHM and I get about 24 hours.
Thanks for the suggestion. That looks interesting. How long is it?
I'm also considering the Tektite Trek 2 LED, which is slightly weaker and shorter (40+ hour) burn time, but would probably still do the job.
Golem Gear also sells a very attractive mask light, the Lola LED Backup Light, but at $99 it's more than I can justify spending (and maybe heavier than I want).
I was thinking of using bike tire inner tube rings, o-rings and or surgical tubing to mount one of these on my mask strap. Shouldn't be a problem.