The Busch & Muller Secuzed dynamo rear light is the smallest rear bike light that uses an integrated Z reflector. It mounts directly onto the seat stay or fender (you may need to drill a hole or two for the latter, no big deal) and offers a theft-proof rear light for all your nocturnal adventures. Ten bright LEDs powered by your bike's dynamo hub surround a Z reflector for added visibility. A standlight capacitor ensures the light stays on for four minutes on stored energy when waiting at a red light.