CUBELITE III Smart Bike Light,Ultra-high Visibility, Auto On/Off, Dual-Channel LED Automatic Brake-Sensing Taillight, USB Type-C Rechargeable Ultra-Long Standby, IPX6 Waterproof, 4 Lighting Modes.

Smart tail light. Excellent value for money. This is the second cube light I have bought

I like that it has a motion sensor and it gets brighter when slowing down. It is lightweight and compact. Made of aluminum instead of plastic.I bought a 2nd one for my other bike.

I've had this for a month or so now, and it's been working great. It comes with a seat rail mount as well as the more common elastic post mount. I chose this one because of the seat rail mount, which both gets it up and out of the way when using a dropper seat post, and also places it it a much more visible location. Just twist the light and it comes off for charging, leaving the mount attached to the seat.The battery seems to last quite a while. I'm using it in auto mode, which automatically turns it on/off based on movement. USB-C charging port is good. It seems very well made. Definitely recommend.

Cool idea with the auto mode. But it drives you crazy!!! I put the light in my backpack when I go into the office and it starts blinking if you do anything!?! There is no indication of manual mode vs auto mode. And one button controls everything so it's confusing to operate. Auto/Manual should be a switch to make it simple.Other than the auto mode insanity, the device works really well. The mount is a bit wonky but it works OK.

Installed it on my 11yo’s electric bike because they zip around the neighborhood like crazy at night and I don’t trust he’ll remember to turn a normal light on. Has worked flawlessly for the last year or so. Very bright and long battery life.

Compre dos luces hace 90 días. Una para mi y una para mi mujer. Las dos ya están rotas. El botón de encendido y apagado queda apretado y no se pueden apagar. Pésima calidad!

The rear bike light is quite compact and light, and its motion detection and easy charging are great features.But the limited mounting capability is unfortunate. There is a hard half-bracket for the seat post, plus thick rubber bands to fasten it, as well as a hard half-bracket for the under-seat, plus zip ties to fasten it. I wish there were a flexible belt/strip instead because 1) I worry the bands will eventually snap from being on the road a lot and 2) the hard brackets only fit on specific parts of the bike, so your placement options are quite limited. I have a saddle bag, and the light won’t fit between it and the seat if I mount it to the seat. I was able to squeeze it in below the saddle bag at the base of the seat post, but that limits the light’s visibility to cars behind me — there’s just a narrow field of vision there. I would have mounted the light on the rear fork, but it is too thin for that hard bracket; and the frame post below the seat post is too thick for the bracket and bands. Bikes these days come in many shapes, and posts vary as well in diameter. This light’s mounting hardware doesn’t accommodate that reality, limiting who can use it.

There are not enough ways to attach this to my bike. I have it hanging my seat bag for now. I don’t like it for that reason, but otherwise a good warning light.