I have a bright battery powered front light and I'm looking for a flashing "be seen" front light that's connected to a dynamo so it's always on whenever I ride. Standlight would be ideal, but isn't necessary. I would be connecting it to a bottle dynamo.

I know about all the Reelight options so don't need suggestions of those. I'm also not interested in DIY solutions.

I understand why most dynamo front lights are solid, but am hoping someone knows of a flashing one I just haven't managed to find yet.

  • 4
    Reason: flashing lights make it harder to judge distance (to the bicycle from the perspective of the car) as well as causing epileptic seizure in a portion of the population.
    – RoboKaren
    Aug 7, 2017 at 0:17
  • 1
    You could get a USB hub dynamo, and run a USB powered light.
    – mattnz
    Aug 7, 2017 at 0:53
  • @mattnz All the USB bike lights I know of switch off when charging. Maybe its another regional difference?
    – Criggie
    Aug 7, 2017 at 1:49
  • 3
    Please, don't do flashing front. Aug 7, 2017 at 18:39
  • 1
    Experiment shows that a B&M Ixon Core will stay switched on while charging. But it doesn't have a flashing mode, so.... Further experiment shows that an Aldi Bikemate light which does have a flashing mode will also stay on while charging. But that's not widely available. The Lezyne that it looks like a clone of might be the same. aldi.co.uk/bikemate-front-%26-rear-led-bike-light/p/… (I still agree with the people saying "don't do it" though.)
    – armb
    Nov 14, 2017 at 17:38

1 Answer 1


Planet Bike Blaze Dynamo has it.

  • 1
    Flashing fronts are such a bad idea. Don't encourage it. ;)
    – RoboKaren
    Aug 8, 2017 at 16:41
  • RoboKaren @whatsisname The Blaze Dynamo has a pulse mode that fades between 55 and 150 lumens that they refer to as "courtesy flash". Do you have thoughts on pulse modes for front lights compared to flash modes?
    – Yogh
    Aug 8, 2017 at 21:43
  • @RoboKaren Why are flashing fronts "such a bad idea"? I see a previous comment mentioning seizures and poor distance judgement. Is there evidence to support either of these two claims?
    – hmqcnoesy
    Aug 20, 2018 at 15:56
  • 1
    @hmqcnoesy the answer to this question responds partly to your question: bicycles.stackexchange.com/questions/2294/…
    – RoboKaren
    Aug 20, 2018 at 15:59

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