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See.Sense ICON3



A great light to be seen by thanks to its numerous modes and eye-catching flash patterns
Incredibly eye-catching LED
Numerous modes
Decent battery life
Quick and easy to mount
Green light for charging

At every product is thoroughly tested for as long as it takes to get a proper insight into how well it works. Our reviewers are experienced cyclists that we trust to be objective. While we strive to ensure that opinions expressed are backed up by facts, reviews are by their nature an informed opinion, not a definitive verdict. We don't intentionally try to break anything (except locks) but we do try to look for weak points in any design. The overall score is not just an average of the other scores: it reflects both a product's function and value – with value determined by how a product compares with items of similar spec, quality, and price.

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With a very bright output and eye-catching patterns the See.Sense ICON3 is certainly a rear light that will get you noticed. With intelligent features added, it is probably one of the cleverest lights on the market too – although for some it might be just a bit too clever. Check out our best rear lights buyer's guide for more options, intelligent and otherwise.

> Buy now: See.Sense ICON3 for £99.99 from See.Sense

According to See.Sense, its ICON3 is 20% more powerful than the ICON2, with a maximum output of 350 lumens.

I was initially concerned that this output was going to be way too bright for use in the dark – as 350 lumens is a lot of light to be spreading about. In reality, though, it never really looks as bright as that.

There are three power modes available from the light unit itself: Reactive, Eco and Constant, which give runtimes of 16 hours, 40 hours and two hours respectively. You select the modes by scrolling through the light's only button.

2022 See Sense ICON3 - 1.jpg

Reactive was my go-to mode, which I chose because it does what its name suggests, reacting to things going on around it in a way that Exposure's Blaze does when you activate its ReAKT mode. The See.Sense responds to changes in your speed and the like, by changing its flashing mode and brightness.

Eco is a lower-level brightness flash mode, while Constant gives a solid output.

You can get even more options by connecting the ICON3 to the See.Sense app, especially when in the Reactive mode.

2022 See Sense ICON3 Rear Light

The 'Super Visibility' mode randomises the flashing pattern in response to your riding environment, while turning on 'Light Sensing' adjusts the light's power output depending on the level of the ambient light. The Brake mode turns the LEDs solid when you decelerate quickly and are at a standstill.

If you don't have the Super Visibility mode on you can select from a range of options for how you want the collection of Chip-on-Board (COB) and focused LEDs to display, with all kinds of flashing and static effects. Basically, you have a whole load of options from which to choose.

If the light is running out of charge you have the 'Get Me Home' function, which will lower the output to give you an hour's worth of light.

Five top-mounted LEDs indicate battery life, shining green before the final one turns red to let you know that you have 20 per cent left.

Oddly, though, when you're charging the ICON3 it displays a green LED, which then goes out when the light is fully charged. Most lights show a red LED when charging, and green to say it is full. As a result of this, there were a few times that I glimpsed the ICON3 and grabbed it before a ride, thinking that charging was complete, only to find that it wasn't fully charged.

It's something you'll quickly get used to if the ICON3 is your only light, but if like me you use more than one light, take care to make sure you're not caught out.

2022 See Sense ICON3 - USB port.jpg

Charging time is around three hours from flat when using a USB-C via a wall socket, and the battery claims quoted at the top of the review are realistic, though this will depend on conditions and how busy the light is working in its reactive mode.

Aside from the illumination the ICON3 also has a few other tricks up its sleeve. Firstly, there is the Ride Survey, which allows you to report things that happened to you on your ride. The opening question is: 'Did anything annoy or scare you during your last ride?' You then hit the yes or no button.

2022 See Sense ICON3 Rear Light

You can report things like close passes, collisions, potholes and so on and drop a pin on the map. The app also features an Infrastructure Request section, where you can highlight things that you'd like to see changed or implemented, such as a wider cycle lane or better bike parking. All this data is said to be passed on anonymously to city planners. Personally, I found it all a bit of a faff, but you may feel differently.

As with Garmin's computers and some other devices, the ICON3 also has built-in crash detection. This sends a text message to a chosen contact with a Google Maps link of your location.

I found that riding on the road this worked with issue, and there were no accidental messages sent to panic my wife. However, on a couple of rides on my gravel bike on technical sections with steep, rocky descents, the system did think I had crashed.

There is also a theft alert available, which tells you if your bike is being moved while the light is fitted. Again, it works well, notifying you on your phone, provided you're in Bluetooth range.

2022 See Sense ICON3 - seatpost mount.jpg

Overall, the light works well. It's well protected from the elements with a robust IP rating of IP67, total protection against dust and it can be submerged in water – so it should survive some rain – and the rubber band-style mount is easy to use. It's also designed to offset the angle of the seatpost.


The ICON3 costs £99.99 and you are getting a lot for your money in this small but well-considered package.

The Exposure Blaze that Liam tested is a little more expensive at £115 and doesn't have modes such as crash detection, theft and various other app-based functions. But its ReAKT technology works very well indeed, and its shortest runtime is three times longer than that of the ICON3, so you won't need to recharge it as often.

I'm also not bothered about all the available options on the See.Sense app, so for me personally the Blaze would probably be a better choice. It's not as powerful but I think 80 lumens is easily bright enough for a rear light.

Another alternative with a different aspect for improving your riding safety is the £109.95 Techalogic CR-1 that Neil reviewed, which is a rear light with a wide-angle HD camera and built-in crash detection. That said, the light itself is much more basic than the See.Sense.

If you are on a budget but still want a rear light with a brake function, then BBB offers the SignalBrake Auto Brake light for just £36.95, though Shaun felt it could have been a bit brighter for daylight running.


If you just want a rear light that you can be seen by, the ICON3 is probably a case of overkill, especially if you aren't bothered by the integration with the See.Sense app and all those extra features. But if you're after that sort of versatility, the ICON3 is a very good light. It's well made (in the UK), robust and with 350 lumens it's very bright, with eye-catching LED modes that will make you stand out everywhere.


A great light to be seen by thanks to its numerous modes and eye-catching flash patterns test report

Make and model: See.Sense ICON3

Size tested: 350 Lumen

Tell us what the light is for, and who it's aimed at. What do the manufacturers say about it? How does that compare to your own feelings about it?

See.Sense says: "ICON3 is our brightest 'to be seen' light yet and with our patented reactive technology helps to attract attention faster to you than ever before on the road. Built on the success of our ICON and ICON2 ranges, and further improved with valuable cyclist feedback gathered over 5+ years, we've crammed more technology and innovation than ever into ICON3."

I found it a very capable light, and it's bright output and various modes will ensure that you're seen in all kinds of conditions.

Tell us some more about the technical aspects of the light?


RUNTIME: 15hrs on Reactive Flash



MOUNTING: Quarter-Turn Mount



Rate the light for quality of construction:
Rate the light for design and ease of use. How simple was the light to use?
Rate the light for the design and usability of the clamping system/s
Rate the light for waterproofing. How did it stand up to the elements?
Rate the light for battery life. How long did it last? How long did it take to recharge?
Rate the light for performance:
Rate the light for durability:
Rate the light for weight:
Rate the light for value:

Tell us how the light performed overall when used for its designed purpose

You can choose from numerous modes, which means the ICON 3 will work in both darkness and daylight to ensure that you're visible at all times.

Tell us what you particularly liked about the light

Simple to use, and very bright.

Tell us what you particularly disliked about the light

The green charging light caught me out a few times.

How does the price compare to that of similar products in the market, including ones recently tested on

Considering the amount of technology involved in the ICON3, I feel that the cost is about right and comparable to other lights we've tested.

Did you enjoy using the light? Yes

Would you consider buying the light? Yes

Would you recommend the light to a friend? Yes

Use this box to explain your overall score

It's a well-made light that is simple to set up and use and has excellent weather resistance too.

Overall rating: 8/10

About the tester

Age: 44  Height: 180cm  Weight: 76kg

I usually ride: This month's test bike  My best bike is: B'Twin Ultra CF draped in the latest bling test components

I've been riding for: Over 20 years  I ride: Every day  I would class myself as: Expert

I regularly do the following types of riding: time trialling, commuting, club rides, sportives, fixed/singlespeed,

As part of the tech team here at F-At Digital, senior product reviewer Stu spends the majority of his time writing in-depth reviews for, and ebiketips using the knowledge gained from testing over 1,500 pieces of kit (plus 100's of bikes) since starting out as a freelancer back in 2009. After first throwing his leg over a race bike back in 2000, Stu's ridden more than 170,000 miles on road, time-trial, track, and gravel bikes, and while he's put his racing days behind him, he still likes to smash the pedals rather than take things easy. With a background in design and engineering, he has an obsession with how things are developed and manufactured, has a borderline fetish for handbuilt metal frames and finds a rim braked road bike very aesthetically pleasing!

Add new comment


Veloism | 1 year ago

Total gimmick. You're paying for useless features here. If you want to invest in something that will actually make a real difference to your safety, then a Garmin Varia is the way to go, and only £30 more than this.

AidanR | 1 year ago
1 like

I haven't had issues with the campaigns, but I'd question the quality of the batteries in previous versions of the Icon. They seem to degrade very quickly compared to other lights I've owned. All of the smart features feel somewhat gimmicky, and push the price into premium territory when the quality of the lights feels budget. I wouldn't buy again.

Awavey replied to AidanR | 1 year ago
1 like

I did the Icon2 campaign, it just took ages for them to deliver anything, but that's par for the course for a lot of these setups.

I'd agree battery life does degrade alot over time, to the point I'll probably need to replace mine for next winter, as I can charge them up not use them at all and still find theyll be dead within a week.

The smart features never really worked for me anyway, their app really only supports Apple products. The only reason I might be tempted to pick these or find a way to replace with more Icon2s is the light is a convenient size, easy to fit to a bike and nice and bright.

AidanR replied to Awavey | 1 year ago

I managed to get the smart features to work OK with Android, but once I'd done some initial setup I never really used the app again. It all felt a bit pointless, and the Bluetooth connection adds to the battery drain, particularly if you're going a week between uses.

IanGlasgow replied to AidanR | 1 year ago

My family have 3 See.Sense Aces.
All have the same issues - they're great little lights (nice n bright with a long battery life and very small n neat) but the app is a pointless faff - they constantly disconnect and have to be deleted and reconnected, if you change settings they forget them and have to be reset next ride. Running the app runs down the light and phone battery for no advantage, and (as you said) they're not good lights for occasional users because Bluetooth runs the battery down (See.Sense claim Bluetooth will switch off if the light is not moved so this should only be a problem if you're carrying it about, e.g. in a bag).
They're good lights, but with sufficient flaws that none of us trust them as anything other than a backup/spare light, and they're not ideal for that.

ChasP replied to IanGlasgow | 1 year ago

I won a set of the Aces in a BC competition a few years ago (before I moved to Cycling UK). Used them a couple of times before giving up for above reasons and they've sat in a drawer ever since.

cherryredDMs replied to AidanR | 1 year ago

Agree with AidanR's points.

I have a small ace light that still has a much better battery than the ICON rear light I bought in a pack. The front one performs better.

Contacted support a few years back and they were no use. Refused to acknowledge the issue.

The app and stats are basically useful for other people like TfL in London. I don't bother with it most of the time as it just adds to the battery issues.

Compared to the service I get from USE/exposure for my other lights, it's chalk and cheese. Reverting back to Exposure when my see sense expire.

Sriracha | 1 year ago

I'm sure it's an OK light. But sometimes it's what you don't see in a review that matters, like how they treat customers.

I was on the Indigogo for this light (two in fact) and the delivery date started going backwards. Eventually, I asked some pointed (not rude) questions about lead time. Next thing I knew I'd been evicted from the project, money refunded - which prevented me participating on the project forum. That was their way of dealing with the questions.

The light eventually came out, many months late, by which time I'd spent my refund on another light.

So I would take their "advice" at face value - spend your money elsewhere.

IanGlasgow replied to Sriracha | 1 year ago

I was on the Indigogo for the previous generation - the Icon 2. Mine turned up but kept falling off. After 3 weeks I arrived home one day without it. See.Sense told me that no customer had ever had a problem with their lights falling off and sent me a couple of videos of their lights not falling off. They offered me a discount on a replacement, which made it the same price I'd paid on Indiegogo.
A few months later I found half a dozen Feefo reviews complaining about their lights falling off - all dated before I bought mine.

I'm delighted that they've changed the mount on the Icon3, apparently in response to feedback from customers - which is odd because apparently nobody has ever had an issue with the old mounts.

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