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

Had a few different tail lights on my mountain bike over the years, gotta say this is my favorite. Most are plastic and don’t mount great, this one is metal, solid mounting option (including under the seat instead of an elastic strap, and that bracket is awesome. Super neat install, looks sweet mounted in that space since I have a dripper post, and works great. Having the brake light function is pretty cool on descents on the trails at nights too. I highly recommend this light.

This is an amazing brake light for your bike. In a big bike city like Long Beach this brake light is extremely useful. It provides a very safe riding experience at night on the narrow busy streets around the city and by the beach. With so many people and the cars on the roads around Long Beach this light provides an additional amount of safety. This bike brake light is almost as bright as a brake light on a car that almost commands attention from other drivers/riders on the road at night. No wires and it still knows when you brake on your bike to brighten the light; exactly like a brake light. I find this light for this price one of the best items I have ever purchased on Amazon. It's just amazing how simple and effective this light makes riding your bike at night. Highly recommend ed.

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 light I 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.

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.

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

I'm amazed at how smart this LED light is. The daytime mode easily attracts a lot of positive comments from people and fellow riders, especially when I am coming to a halt or slowing on a downhill turn. Everyone who asks is looking for a switch or cable attached to my brakes. =) Holds a charge well. I've charged only 2x in one month and almost 300 miles of riding. It is bright especially during the day! I bought another for my son's bike and have recommended this to other riders in my group. I especially love the seat clamp install, it looks like it was made for my bike.

holds a charge for a long time - has lights indicating how much charge is left - and goes on automatically. Can't really ask for more.

The product works as advertised. I bought 2, for me and my wife. Good quality, sturdy, kind of heavy for the size (I think it is good), great bright and features. The USB-C works also well, complete charges did not take soo long. Also, for the rides that I usually do (commute - 2/3 hours) the battery never runs out. My friend was impressed in my first ride using it. I highly recommend it.

Excelente luz, súper fácil de poner, mucha duración, y sobre todo la función de encender por freno en forma automática y quedar apagada latente cuando no se usa

So handy and durable… brighter lights.

Me encanto el sensor que tiene para aumentar la luminosidad cuando frenas, muy visible por las noches, en el luz de día la luz del stop se ve bastante bien, siento que le falta un poco a la luz al no estar frenado en el dia

Actualizaciòn: Empezò a prenderse sola despues de 4 meses de uso moderado, creo que no soporto el comienzo de la temporada de lluvias. Me gustó el diseño, el hecho de que se puede colocar en el sillín y queda bastante bien, la función de apagado mientras no hay movimiento se me hace muy útil, la visibilidad tal vez me queda a deber un poco pero por el precio siento que es buena compra