i run a knog blinder 4 on the rear. it's talk and on flashing red illuminates through the British fog quite well. i run it on the seaport up high.

it's probably been on and off the bike between 150 an 200 times in the first year without incident.

i probably get about 4hrs flashlight the front and rear.

check out my Bso thread and you'll see pics.

feel free to ask any questions