CygoliteDice HL– 150 Lumen Bike Light– 6 Night & 2 Daytime Modes– Ultra Compact Design– IP64 Water Resistant– Sturdy Flexible Mount– USB Rechargeable Headlight - for Aero Road & Commuter Bicycles

PROS:Tiny, but sufficiently powerful to catch people’s attention during daylight on bright, sunny days.Ten hours of run time for the brightest daylight blinking mode.Waterproof. Build quality is excellent.Performance to price is superb. Cygolites in general perform as well as or outperform some of the most expensive and premium cycling lights on the market.Cygolite customer service is outstanding. Plus, if/when you need to change the battery on this light, it’s possible to return it to Cygolite and have the battery replaced, unlike many other cycling related electronic components which are basically disposable once the battery dies.CONS:Uses Micro USB charging cable rather than USB C.

Small, effective light for day/evening riding. the flashing (strobe) is great as a suplement for night riding. and as a stand alone lamp for daytime riding. For the $ this lamp is hard to beat. it is not a $100 light. It is a $25 light. I decided this was a great buy and served my purpose just fine. I would buy this again.

This light is super bright. It is easy to use. Rechargeable using micro-USB. Small, so no added bulk to handlebars. The quirk is that the blinking pattern is different in day vs. night. The light has some kind of sensor in it. During the day it is a single flash every second or so (which is what I wanted). When I first got it and tested it indoors, it flashed multiple times with a short break between multiple-flash sequences. I was ready to return it, then I used it on a ride and noticed the difference. It even thinks it is nighttime if I turn it on in my garage while getting the bike out.

I have been using this now for about 6 months and 600 miles on my bike. It has worked very well. Don't let the small size fool you as it flashes bright and the battery lasts a long time before needing recharging. Mounting is easy and secure. This light is really for safety as in my opinion it is not bright enough for night riding. As a result, I only use it in flashing mode. But I knew that when I bought it. Overall I am very pleased.On my bike control cables were in the way and prevented good forward visibility but that was remedied by 3D printing an auxiliary mount which raised it a little.

Best front bike light, the flashing daylight is 200 lumen and it is so small that you can put it in your pocket, and it last 24 hours.

I bought this to use for daytime visibility. When working, the brightness does seem fine for daytime use. The problem is that this is rarely working. It seems to lose its charge very quickly. I'd thought I was forgetting to charge it or not charging it sufficiently, but that doesn't seem to be the case - it usually stops working within an hour, regardless of the setting. I use a Cygolite taillight which I'm very happy with and had high hopes for this light, but this unit is either defective or just very poor quality.

I use this for my road bike day riding to be seen. Very bright and fits well on the road handlebars due to its compact design. For such a small light, it is very bright (I bought the 150 lumen model). Not sure about battery life as the longest ride I've done with it so far was 1-1/2 hours. This would also work in a pinch to illuminate street or trail at night if you get caught out later than expected but I'd want something more powerful for dedicated night riding, particularly MTB. Very solid feel construction. I have tried many lights over the years and Cygolight is one of the best brands out there in my opinion and worth the little extra cost. I checked the Cygolight website to see what they are showing as the most current models.

Not very bright and not very long battery life.But it is bright enough and battery lasts long enough to get me out of trouble.Tiny, really really tiny and perfect if you're paranoid about bike weight.So it's not the best by any single measure but it's the best compromise.[Edit] Downgraded from 5 to 3 stars because battery life is too short: about 4 hours on the lowest power setting. It's not clear to me if the battery degraded or it was like this since I bought it. I cannot count on it during my longer rides, so it's somewhat useless now.