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.

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.

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.

This is a nice product, pro in every way. Mounted well, charges quickly. Only problem is I forget to turn it on half the time!

Bright, charges fast, lasts days, easy to install and is bright enough to keep ypu safe.

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!

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.

Brightness is great, looks nice. Easy mounting even though I made custom mount for my ebike. I like the idea but was concerned from the getgo on how sensitive the brake light function would work. It's too sensitive meaning even when cruising at a consistent speed on pavement the brake light pretty much always stays on. Every once in a while it will turn off and then right back on. For a product that advertises a running light and a brake light, not a good thing. Might as well just purchase a cheaper running light. Or add adjustment for the sensitivity of the brake light function.

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.