Our Signal Brake rear light is not just a conventional rear light. It has several very clever and unique features. The built-in G-sensor captures when braking to activate bright brake light. The light switches to standby when it finds that the bike stands in place for more than 3 minutes, so you will never forget to turn off the light. This and many other great features contain this special rear light signal to keep you always safe, whether you drive during day or at night! High-performance rear light with brake light function.G-sensor activates the brake light illumination (50 lumens) if it registers the slowdown. detects that the bike has not moved for more than 3 minutes.Theytation using a strap -ount system to diameter from 5 to 42mm.Automatic USB water-related watering watering for watering. Slow flashing, lighting.