Lezyne Strip Drive Front LED 120 lumen
Its great because it fits aero bars without having to use a crappy clamp.
Oh and it has these these features as well:
Powerful five LED cycling light.
Light and durable co-molded lens/body construction.
Five ultrahigh-output LEDs delivering up to 120 lumens.
Mode Memory function returns to selected mode after turning off.
9 combined lumen and flash modes.
Enhanced MOR (Maximum Optical Reflection) lens with built-in side visibility. Integrated cable-free recharging USB stick.
WEIGHT:69g (without strap mount)
RECHARGE TIME:2.5hrs (1A) / N/A (2A)