I like the bright lights, good design, compact size, well maded good materials. But there are a couple of things that make it worse, I find the battery capacity pretty small, and hook design is not the best, the hook lies well on the seatbar (who scratches the carbon I recommend a stick on a sticky water vedo), but easily slips off when i hang it on the bag.

Great light great price

I really like this little light. It’s bright enough that cars will see it while I’m riding twisty country roads. It’s plastic where it makes contact with your seat post. This initially made me worry that it would scratch up my carbon post, but no signs of wear yet. It also stays put and doesn’t twist around the post. I will say that it’s a little difficult to get it on and off around a 27.2 seat post.

Pros: small, lightweight Cons: battery life weak - 2 hours at best in flashing mode. Not really acceptable for longer rides

My new favourite light, need to be seen

Needs to be updated to usb-c. Micro usb is old school and not practical anymore

Everything good with this light

Great, small size tail light that can mount at top of seat post. Only drawback is small size means it has a smaller battery, so need to recharge after every few rides.

Clip is no good on a seat bag. Lost on first ride. Great as a helmet or seat post light.

Very happy with this small light that don't need you to screw something on your bike. Really easy to mount, battery lives forever. I'm riding around 3-4 time a week in the morning, in flashing mode I charge once in 2-3 weeks. People who wrote that they lose this light in first ride - probably not mounter it correctly.

Small, powerful, and convenient!

Light fitted to Specialized seat bag (as others have been)...it fell off during 1st ride and was lost. The clip isnt tight enough! The light itself is very bright and visible...but if you buy one make sure it is securely fitted... you have been advised.

Great product for what it is. If I had it to do over again I would get a garmin with radar.

The light itself is great- streamlined, compact, works well and easy to use. However mine fell off within a couple of uses with the included mounting system.

The light is great. However, the mount is unstable, and I lost the light after less than two months.

Fell off within an hour of first use. Fastened it EXACTLY according to the included instructions. Pretty poor effort, Specialized

really nice flashback for taillight

Totally an essential part of road cycling kit , 5 start all the way

Nice little light, been using it for road transfers during mtb rides. It has stayed secure through the chunk. Would be nice if it was USB-C though.

Connecting the charging cord is somewhat difficult.

Works well

The light is small, looks nice and lights bright. But the way it attaches is very bad. On the picture it shows it being attached to a helmet, but it was absolutely impossible with Align II

Great little light, but be careful, I hooked it on my bike bag and lost it on the first bump I hit. Didn't notice until I was 20 miles into the ride. Luckily I backtracked on the way home and found it, but the design needs some work.

This light is just as advertised, it is light weight, gives you many different mounting options and is very bright. I chose the option of mounting on my helmet and it works well.

Works great. Nice that I can exchange it for my different bikes.

Lost off saddle bag on first ride.

Like other reviewers here I like this light but made the mistake of clipping it to the strap on my saddle bag. It was there when I started my ride but disappeared somewhere en route--my first ride with it! If I buy a replacement it will go on my seatpost. Specialized MUST fix this issue.

The light is pretty bright products better than I expected for the price

I like the light…the size, it’s rechargeable. However if you plan to use it on your under seat pack be prepared to lose it. It bounce off on my second use. The clip could be very easily designed to prevent this from happening. On similar lights I might have put a piece of tape over the clip but since you have to remove the light after every ride to recharge it this is not practical.

Works well on the seat post. I bought one for each of my bikes.

Small but very strong light, I am happy to use it on the night rides home from work. Highly recommend.

this does what it is supposed to do, and more. it is much brighter than other lights i see out on the street. the varied modes are very nice, i prefer the slow blink. it is extremely simple to charge and it operates for 2 hours or more, on my longer rides. the clip is extremely sturdy. it does not attach to my helmet with the included band. but the clip holds it securely to my under seat storage container. i did buy this again and again...i got one for my wife for Christmas.

Works great, holds battery charge very well, super light weight. Just make sure you remove if spraying/cleaning your bike. My light took a direct hit from the hose, and moisture got caught inside it, and it was laid to rest in about 24 hours of getting soaked. I had it for 4 months and I've been caught in the rain with it, ran through dense fog, and it came out just fine. But a direct spray from the garden hose was its ultimate undoing.

I have several lights over time, but I really like this one, compact and simple to use with an easy mounting that can be mounted in a variety of positions including clothing. Sometimes simple things just work.

Nice light: well-built, bright, lightweight. However, it has a fatal flaw that would prevent me from buying again or recommending. The clip lacks any sort of barb that would serve as a catch when it's hooked to your jersey, saddlebag, or whatever. It simply hangs without any reassurance that it will stay put, and it did not stay put for me, and therefore I lost mine. Rather maddening, since I really wanted to like this taillight.

Very versatile light, you can put it anywhere...helmet, backpack and bike!