Smart Bike Tail Light USB Rechargeable Bicycle Turn Signals with Remote Control Rear Bike Light Waterproof Safety Warning Back Lights Bike Alarm for Night Riding Mountain

This is a nice little unit. I cycle mainly on track, which is floodlit at night. Even with the floodlights, I realised that it’s difficult to see other cyclists at a distance, so decided I should get done lights as a courtesy to others, so they have an awareness of my presence! This is a nice little unit, with a nice solid, quality feel to it. It comes with a choice of fitment - a fixed bracket which clamps to underside of saddle on the metal rails, or a mount with rubber strap to easily attach/detach it to your seat post. I went for the saddle mount as it is out of the way and looks tidy. A nice touch is that they provide a hex/allen key to fit the clamping bolts - Nothing fancy but it does mean you can fit it without searching the garage for the right size hex key! The main unit itself is a nice alloy construction and has a USB C charging port on the back. In use the unit screws on to either the saddle mount or the seat post mount. The thread is very fine so takes a quite a few turns to fully tighten it and there is an O-ring seal which keeps the water out from the charging port once screwed in. I can’t imagine it will come undone by accident in use. The different modes are good and accessed by pressing the metal button in the middle of the light - flashing; breathing (I like this one!); a fast triple (I think) flash; constant on. The accelerometer that’s built in appears to work well, so that when the bike suddenly decelerates under braking, the light comes on solid and bright and stays on for around 3 seconds. I can’t tell if it stays on bright all the time you are braking (like a true brake light on a car or motorbike would do) as I’m likely to fall off the bike trying to work that out. If I can find a friendly cyclist on the track at the same time, I might ask them to watch for me and let me know - I’ll update this when I find out! Basically it’s great value, feels decent quality and does what it says it does.

Unaccustomed as I am etc to reviewing kit - I will heartily recommend this light for all willing to lend and ear. Beautiful designed, beautiful light quality in terms of clarity, luminosity and colour (yes, seriously - wonderful shade of red), easy to attach (seat post in my case), easy to unattach, easy to recharge (USB cable), and easy to toggle between 4 light modes, and a handy indicator for battery strength (4 tiny blue leds for fully charged, counting down to 3,2,1). Plus I love the brake indicator - where it brightens strongly when firmly decelerating. I'm unsure about overall battery life, or replacing the battery (hopefully it'll be both long-lasting and easily replaceable) - but it's got me safely through the long, dark Winter months (Nov - Feb) - and hopefully many, many more to come.

Nicely made. However - beware - if you are buying this for an electric bike - the clamp may well not fit the saddle frame. I managed to fabricate a fitting for my ebike and the light looks great and works well. The light does turn off and on automatically which is a plus - and the brake-light actually seems to work.

2nd review as lost 1st. Awesome light (read rest of review) only issue is I have E13 dropper & it loses grip pretty quickly when rail mounted if hitting jumps/dh trails. Probs my own fault for using when hitting trails, but absolutely amazing (if you remember to remove it 1st 🤔😆) Fantastic product, good brightness & excellent brake sensing. 4 easy to select modes. CNC build & rubber o ring to help waterproofing. 2 different mounts provided, both very good & hold light solidly even when offroad. Very similar to Rockbros Q5. Don't just think about it, do it. It'll be one of the best purchases you can make The fact I bought it twice says everything imo

Golden - works well

I needed a light for the back of my mountain bike. Local retailer had nothing suitable as I have a plastic mud guard which got in the way of fixing a light in the usual position. Saw this and thought I’d give it a try. To attach it to the bike it fixes to the rails under the seat, you tighten the bracket under the bike saddle by using the supplied LG Hex Bolt and LG Hex Tool. What I found was the hex bolt were not well made. Had great difficulty in tightening them. I would suggest if better quality hex bolts were used this would solve the issue. It does have the ability to attach the light with a rubber strap, I’m not sure I’d trust that long term. As for the light, it’s bright, has several flashing modes. As any cyclist will tell you, you need to be seen at night, I have no doubt this light will be seen from considerable distance. I can’t review how long the light will have power once charged as I only received it today. The manufacturer claims after 2 hour charge it will last for some time. The light unscrews to make it easy to recharge and take of the bike if leaving the bike. The box says the light responds when you break, I will try this when I have someone out on a bike ride with me and will then update this review. Instructions, ok chinaenglish lol. Gauranteed it says for a year, we will see. Finally at minute, I’m happy with it.

Hasn't been installed yet as it is a gift, but looks quite robust, lights up very brightly and has a good range of functions.

looks the part and the bracket is good. in constant light mode it is fine - for any of the other flashing modes - dont bother. all of the flashing modes switch off automatically if no motion is detected. except - they actually switch off and stay off even whilst riding, and of course being a rear light this is not apparent. so 10 miles down the road you realise youve been riding with no rear light - which is dangerous. im all for saving energy, but the difference between 5 hours and 7 hours running time pales into insignificance if you get hit by a car because the thing has switched itself off half an hour ago. i bought 2 thinking the first one was maybe faulty - nope... they both behave the same.

I don't know why I didn't get one of these sooner! It auto senses when coming to a stop. Multiple flash/strobe modes, easy to navigate modes, and when you brake it goes super bright. Great for cyclists behind you and for cars. The build quality is surprisingly good, almost a little too heavy - wished it was a bit lighter if anything. Two ways to install it, underneath the seat or on the seat post. Overall very happy with the product.

vary goid

Produit solide, bien fini, bien conçu et qui se fixe parfaitement. Un sans faute!

Je surkiffe ce produit. Je l'ai acheté après m'être fait percuter par l'arrière par un cycliste me suivant de trop près et ne m'ayant pas vu freiner. Un inidicateur de freinage devrait être obligatoire sur les vélos ! Tout en matériaux de qualité (corps et bouton en aluminium). Lumière efficace, très visible (bien plus que ma précédente achetée dans une grande enseigne spécialisée dans le sport), avec plusieurs modes : clignottant, respiration, stroboscope et fixe (voir ma vidéo jointe à ce commentaire). L'indicateur de freinage fonctionne sur les 4 modes. 4 petites diodes bleues indiquent le niveau de batterie. La connexion micro USB est parfaitement à l'abri de l'humidité puisqu'il faut dévisser la lumière de son support pour y accéder (et non pas avec un petit cache en caoutchouc pas parfaitement étanche et qui finit en général par casser avec le temps). Fixation sur les rails de selle par vis allen et non par des serre-câbles comme sur d'autres modèles similaires. Donc facilement démontable pour mettre rapidement cette lumière sur un autre vélo. Positionnée ainsi, la lumière est parfaitement visible et d'autant plus protégée de la pluie. Elle est également très facilement accessible si on veut changer de mode sans s'arrêter de rouler (lors d'un contrôle de forces de l'ordre par exemple ; pour rappel, actuellement en France seul le mode fixe est officiellement autorisé). Un autre système de fixation pour tige de selle (si les rails de selle sont occupés par une sacoche par exemple) est fourni. Cette deuxième fixation corrige l'angle de la tige de selle et la lumière est donc parfaitement horizontale pour un éclairage optimal. Bref, vu le prix, n'hésitez pas ! Ajout du 02/02/2022 : Après plusieurs mois d'utilisation, toujours aussi content de ce produit et quelques précisions : - La batterie dure vraiment longtemps, aucun souci de ce côté : je ne me souviens plus quand je l'ai chargée la dernière fois et il me reste 2 diodes bleues alors que j'utilise tous les jours mon vélo - Sur les 2 premiers modes (clignotant et respiration), la lumière s'éteint automatiquement après 30 secondes sans mouvement ... et se rallume dès le premier mouvement. Donc sur ces 2 modes, plus besoin d'allumer ou d'éteindre et plus d'oubli possible. - Sur les 2 autres modes (stroboscope et fixe), il n'y a pas d'arrêt automatique aprés 30 secondes sans mouvement. Je pensais que c'était une erreur sur le mode stroboscope, mais après réflexion, c'est plutôt bien pensé : si on s'arrête en bord de route et qu'on pose le vélo pour faire autre chose, c'est bien d'avoir un mode clignotant qui ne s'éteint pas ! Bref à refaire, je rachète ce produit sans hésiter une seconde.

I love this light. Finally got rid of my bag that was strapped to my seat. This device fit perfectly on my road bike saddle and it is easy to remove and install by simply screwing in our out. It has the capability to set to a flash which helps hold the charge longer and at the same time it is rechácenle, the four indicator blue lights tell you how much battery life is left. Nice and bright red led for safety where you can be spotted from a far distance. I hope they don’t stop making this product because I would want to make sure all my bikes have one for years to come. Buy it you will not be disappointed.