Busch & Mueller's new Micro taillight is no bigger than a dime across the lens.
Compatible with various brands of dynamo headlight. Note that with dynamo lights, the wiring from headlight to tail light is typically included with the headlight, not the tail light, so this light doesn't include a wire. You can purchase that separately from us for $4 if you need it.
Mounts to your fender, seatpost, or seatstay. It also pivots, making many different mounting positions possible.
Note that it doesn't have any built-in reflectors, unlike other tail lights. If you want a small taillight that does have reflectors, check out the B&M Small.