I'm thinking of buying this bike w/dynohub...
And it doesn't specify the make/model of the light. The bike is '09 Specialized Globe Vienna Deluxe 1.
Since I don't know the make/model, I don't know how expensive replacement bulbs would be. Switching to a LED lamp would probably be cheaper in the long run, but I would have to justify the initial cost.
have you looked at this yet?
The P7 Flashlight Thread
everyone that has tried, has gotten excellent results.
and yes it works better than those "specialized" lights
for less than half the money.
give them a try.
Check out Peter White cycles for dynohub lights.
The new eDeleux are supposed to be very nice. I have a IQ Fly which I like, but I am thinking of upgrading to the eDelux. I much prefer the LED dyno lights to the older types like the E6.