NIUAWASASmart Rear Bike Lights - Brake Sensing Auto On/Off Bike Tail Light USB Rechargeable IP66 Waterproof 6 Modes LED Bicycle Back Red Light Night Warning Cycling Safety

A fantastic little light, which takes care of itself once installed. All I have to do is recharge it occasionally.I use it on an ebike, and the brake light function is fantastic. Anything that warns drivers of your intentions on an ebike can be a life saving addition. I take lights seriously on mine.That being said, the only draw back is the size. It's a small light, and I've used mine I addition to another, larger light which is powered by the ebike battery. I also have a 150 lumen rechargeable light for foggy and low illumination scenarios, but this light is the only one with a brake sensing function, and as such it's a vital addition to any bike.For the price, they're a steal. It's robust, waterproof, and once set it stays on that setting.Absolutely brilliant little piece of kit, but if it's your ONLY rear light, I'd suggest buying two.

This little light is very bright and does a great job. The brake light works very well and also works during the day without the need for running lights. The light has auto settings which turned on turns the light on automatically as it becomes dark. This is a great function if you set out late before it gets dark or you have to travel though tunnels and dark places where you would have to stop to turn on your light. The instructions are terrible! They have been badly translated and are nonsensical. There is only one button so you can throw the instructions out the window and have a play to understand the functions. Battery lasts for ages before it needs recharging. All round it is a great little light that is easy to fit.

Still working after several wet rides and hard terrain, I have had so many lights that have fallen of my bike whilst out on rides or just stopped working after a hard wet muddy ride this seems good let’s hope it lasts

A great, easy to use little light. Charges in no time at all and provides a VERY bright light - which seems to last forever. This also has plenty of options for lighting effects too e.g. on solid, flash, intermittent etc.Great light. Recommended.

I found it hard to set on automatic and when I did it lost the setting after a few days, but that said, used as an ordinary back light it's brilliant and has a very long battery life.

Lasted a couple of months tops.

Compact ,yet bright. Good dual mode operation. Battery life great.

brought this and fitted to seat post tried to set light into smart mode for break light but cant seam to get the hang off it so will try and uae in non flashing mode

Funziona egregiamente. Il serraggio sottosella era preferibile a morsetto.

Très bien pour le prix, et le format.Juste que l'option automatique se désactive en appuyant 2 fois de suite sur le bouton marche/arrêt. Donc il m'arrive souvent de la désactiver sans le vouloir. Et rien n'indique ensuite qu'elle a été désactivée, donc on s'en rend compte en roulant (trop tard, obligé de s'arrêter).

De momento reconozco que me lié un poco para dejarla en automático, pero después de leer tranquilamente las instrucciones , resultó que el truco está en que cuando está en modo automático no hay que apagarla manualmente , hay que esperar 45 s.gs. y se apaga sola y al volver a moverla y ella se enciende sola. por lo demás le doy la máxima puntuación, se ve muy bien y hace lo que pone.

Buena duración. Tanto en automático como en manual, todas los modos funcionan. La luz se ve a bastante distancia de día y de noche. Si fuera de aluminio tendría 5 estrellas.

La batteria dura pochissimo, praticamente non regge un’uscita. Già cestinato.