Monday 20 May 2019

See.Sense Ace Rear Light on a Brompton

A few months ago I saw an advert for the 'See.Sense Ace' rear light which you could get for £24.99 rather than the usual £44.99 official retail price. At that price I thought that I would give it a go.

The Ace was a bike light originally started as a Kickstarter. It arrived very quickly and opening the packet my first thought about the Ace rear light was how small and lightweight it was. Looking at the specifications it is a mere 35 grams.

As part of the pack you get:

  • The Ace rear light of course
  • 1 x Ace mount and insert
  • 1 x aero mount (nit really of any use to me)
  • 1 x bag mount (very useful indeed)
  • 4 x straps of varying size
  • 1 x micro USB cable

Plugging the light into charge didn't take long and in about two hours or so I have a full charge. The light can be operated by the button on the front but where it comes into its own is the additional functions to be had via the app.

The app has worked really well with my iPhone and there have been no issues connecting it to the light. With the app you can power the light on and off and control the different modes. You can choose between having the light on constant, flash, twin flash, burst, pulse and Eco mode. They are all pretty useful but for me the best feature is the ability too dial down the brightness for the obvious but also to increase burn times.

 Another option that can be turned on / off is the brake mode. With this on, when you get to a point where you come to a stop - traffic lights, junctions, roundabouts - the Ace increases its brightness automatically. Again this works very well.

Other options include the ability to send crash alerts to a designated contact or you receiving an alert shock you bike be moved.

The light pumps out 125 lumens at it maximum setting and provides 200 degrees of side visibility and is IP67 rated for its waterproofing.

The mounts are small and discrete and work well. I like the bag mount in particular. The lightweight clip is strong and there is little chance of it coming loose from a saddlebag, jacket or jersey. The seat post mount, attached via two rubber straps works well, holding the light very securely.

I have used the light on a couple of all night rides and had plenty of juice left on the light when I am back in London in daylight. Dialled down it is still an excellent rear light after 7 - 8 hours of constant use but can then be put to the maximum brightness setting for daytime use so that it can still be seen.

For £24.99 it was a bargain but you can get one for about £33 from a few shops. It is a great little light and I am really glad that I bought it.


  1. Did you try to use it via a Garmin head unit?

    1. Hello Dan. I didn't as I do not own a Garmin anymore having moved on to Wahoo, so do not know if this is possible. I use it via the app on my iPhone and that I have to say is good. Had not crashed etc.., and it all just works.

  2. Thanks a lot. The Garmin 520 and + allow to create a light network, so that you can turn on and off ant+ and Bluetooth lights, front and rear, as you start the run. Which is nice! I wandered is ace lights work this way, these are much nicer than Garmin lights! Maybe wahoo can also do this?


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