Review on Enhance Cycling Safety with LUMINTOP Bike Tail Light Type 🚴 C Rechargeable BT1 - Waterproof, Long Battery Life, Easy to Use by Bob Schultz

The light is bright enough to attach a tail light or something to a backpack. I carry it on both my e-bike saddlebag and my backpack - the included mechanism is easy to use but reliable until it probably breaks one day. For the price it's ok. Biggest downside: no sign until it's too late that your battery is running low - until it's too late. So I charge it at the same time as the main headlight, whether I need it or not. The USB-C port is very convenient, and more bike lights and electronics should quickly jump to this new standard. Otherwise, the light can be easily switched on and switched between different flashing modes. The instructions are written in poor English and are useless. The included plastic bin is nice, but once installed it's of little use.