Smart Bike Tail Light: Auto On/Off Flashing Lights Red Back Led Warning Flashlight Easy Mount Cycling Safety Brake Taillight USB Rechargeable Ultra Bright Light Sensing Bicycle Rear Light

The media could not be loaded. I've been a bike commuter for the last eight years and that means riding rain or shine, day or night. As a result, I bought a lot of bicycle tail lights. This is one of, if not THE best tail lights I’ve ever owned. (I know some reviews have stated that the tail light is not bright enough during daytime use. Those reviewers need to look carefully at the instructions. The tail light brightness is controlled by a long press in the continuous mode.)It also seems to have some ability to sense ambient lighting conditions, and to modify the level of brightness, for example, when it gets dark decreasing from the maximum brightness level. I don’t think you would want to run this at the brightest setting in the dark on a group ride as you would blind riders behind you. At its brightest light is easily over 100 lm which is plenty bright.I just got it so I can’t say that I have evaluated if the run times are has advertised. That not withstanding, I would like to comment on the thoughtfulness of the design and the excellence of execution. The overall quality of this tail light is jewel-like. This appears to be a completely waterproof tail light with an IPX6 rating. It has very fast charging via USB-C, the three most useful modes, flash, strobe, and continuous, auto on- and auto-off, and an excellent and highly sensitive brake lightI think that the included mounting hardware is extremely well done. I wish that more mounting options were available. If you run an under seat bag and have limited access to the seat post, it will be a challenge to mount this light. However, I was running an undeseat bag, and I like this light so much that I stuck my tools in my handlebar bag and I am running this with the saddle rail attachment. I feel very comfortable running this attached to my saddle rails, even though they are carbon fiber. The saddle rail clamp includes plastic liners which allow for clamp to be securely attached to the carbon rails without damaging them.In summary, I think this is a fantastic tail light. It would be fantastic at four times the price but at this price is it is a 100% no brainer! the best option for my money on the market.

Best feature is the automatic on/off setting so the battery does not die, which by the way lasts a long time. Fitls securely to my bike and has a very bright light.

Cool light easy to mount

I'll preface this review by saying that, for me, this is a 5 star product. I am very happy with the brightness, impressed with the battery life, and it was easy to install. I rated the product based on feedback I received from my riding buddies.Brightness - I gave it four stars because it is not as visible in the day as I was expecting, but it is plenty bright at night.Battery Life - I don't pay attention to manufacturer's claims about battery life. I have yet to use any product that holds a charge for as long as advertised. I was pleasantly surprised when I got about 20 hours out of it. That it about what I get out of my Wahoo so it's convenient to charge them both at the same time.Installation - I'm an engineer by trade so I don't have any difficulties with bike part installations. I will say that i checked several of my seats and only one spacer was needed for all (shimano pro, selle italia, specialized, prologo). You definitely will want to have a light or bright room when installing. I would recommend removing the seat for installation. I have had several of these "under the seat" lights. All the previous one used zip ties instead of screws.The machining quality of this light is unbelievable for the price. The all aluminum body and mount are secured on the seat rails by tightening the supplied machine screws. I recommend removing one side, insert the spacer, and then attach it to the seat rails. There is no need to remove both sides. It is a very solid mount. I will be purchasing a couple more for my other bikes.

Great value for this light. It is very bright and easy to install.

Taillight is amazing and I had no idea it also had a brake light feature. So when you slow down the intensity goes through the roof. With three levels of brightness and various flashing modes it easily draws a persons attention.It also came with two mounting options and the quality of the parts are exceptional; akin to an aircraft aluminum flashlight.Highly recommend

Has a great brightness and different modes

I like a few things about it:1. Good, solid Al design.2. easy to control without seeing it, i.e., while riding - the button is right in the middle of the light3. The charging port is hidden between the light and the bracket - no dirt, moisture or fiddling with a rubber cover.4. Break light.5. two ways to attach it to the bicycle. I especially like the one attaching to the seat - high and robust.6. good price.Have not fully tested the battery hence 4 stars for it,