WasaFire Magnus Innovation S100 USB Bicycle Tail Lights, Powerful 100 Lumen Bike Tail Light Runs 30+ Hours, Bike Light Fits on All Mountain Bikes, Dirt Bike Road Bike Guarantee!

Your browser does not support HTML5 video.  Really bright tail light. It has six modes, 3 constant light modes, and 3 strobe modes. I usually use the strobe mode because it is kinda annoying to look at, which is good to capture the attention of drivers. I also like the strobe mode because it lasts a long time. Been riding for a week 1 hour each day and have not need to charge it yet. Happy so far will come back 1 month for an update.

Got this light on Amazon, the package didn’t come with a USB charger. I email the customer service and receive a charging cord 3 days later. Great customer support from an American company. The light is great, super bright I mainly mount it on back of my helmet. I feel much safer on the road with the light blinking. Looking at the Vision front light now. Very tempting...

I have two other bike taillights, and they are both good, but the S100 is certainly the brightest. It is EXTREMELY bright, which is exactly what I want to maximize my visibility while riding. My wife has followed me with the three lights on during the day, and tells me that the S100 is way more visible and eye catching. I own two other Magnus products which I use regularly, the Vision II bike light, and the Atlas headlamp, and they are both excellent. Magnus Gear is serious when they say lifetime warranty. My first product of theirs was a Vision I bike light, and I used it for a couple years and loved it, but one day I dropped it on a concrete floor and damaged the control switch. I contacted Magnus asking if I could buy a replacement switch, thinking that it would not be covered by warranty since the damage was my own fault. To my surprise and pleasure, they quickly sent me a note apologizing for the problem with the light, and I received a new Vision II headlight a couple days later. BTW, the Vision II makes an excellent flashlight -- super bright, easy to carry and long lasting battery -- and I use it on night time walks in the unlighted rural area where I live.

Disclosure: I received a discounted product in exchange for the review.Regardless of how I got the light it is a good one.Pros: Very small and light. And incredibly bright. As someone else said the quick flash is painful to look at and I would not want to annoy cars behind me that much. But there are three other modes any of which are fine.I've not used it long enough to know how long it will go before needing a charge but I suspect it will be way longer than necessary. It is so easy to take on and off that I'm not concerned. And not having to deal with a battery is a huge plus all around.Cons: Not much of one at all. Took me a bit to get it on my bike but I think that was just me with too many thumbs. I did not see any failings with the equipment.

I've been using this light for a few days now during rainy days. It has a nice selection of strobe and fixed light modes, and your last setting gets "saved" after you turn it off which I always find very convenient for any bike light. The light itself is very bright at the highest setting, and it's versatile given the possible ways and sites it can be mounted (a rubber band and a elastic fabric Velcro straps are included with the light). Battery life is as stated and the light can be conveniently charged using the included USB cable. Although of course I'm still not in the position of commenting on long-term durability I can say that I have noticed no malfunction whatsoever even riding with very wet conditions.After you register this product online on the manufacturer's website (it takes a minute) you will get lifetime warranty. I have previous experience with Magnus Costumer Service which I contacted for problems I had with another product of theirs; in my experience they were always very nice and showed me that they really stand behind their product.If anything new will come up I will update this review. For now, I would strongly recommend this product: it's a good deal for a versatile bike light that does its job well.

The light surprised me every which way. It is so small I never expected the brightness and power it puts out. I compared it to my Cat Eye rear light which is, was the brightest light I had found, and the S100 outshines it beyond imagination.It has been a year since I purchased this light and was impressed initially, but after a year or so, not so much.It has failed blinking/flashing and a replacement only last several months. I commute daily by bicycle several miles each way and in all kinds of weather, yes even snow at times. I have sent several correspondences requesting assistance over the past two weeks and have not received a response as had initially for the first replacement.

The S100 is really lite and very bright. It would be great for day or night. The clip that is permanently attached can be used to attach to a backpack it is very strong. The build itself feels a bit on the cheap side but with the built in battery that lasts at least 3hrs and is waterproof. I am definitely willing to put this to the test. $15 is pretty affordable. This will definitely get you noticed while on the road with just the right mode 6 to choose from.I wish the package would have detailed the light modes and brightness only the website has this information. And double click for the solid light, it took a little while to realize that but this is in the instructions.Tip when registering your product: Leave out the dashes of the Amazon Order number.