One of the very few dynamo taillights that'll mount to either a seatstay or seatpost. The mount swivels so that you set the light vertical. Like all B&M dynamo lights, it has a capacitor (standing light) that keeps the light on for 4 minutes after you stop (that's what the "Plus" denotes). Also features over-voltage protection.
Compatible with all B&M headlights and almost all other dynamo headlights; not compatible with Supernova headlights.
Handlebar-mounted USB port for charging small smart devices including iPhones, Android, Garmin (when light is switched off).
Senso automatically switches between daytime running lights and much brighter night mode.
Monitors taillight so you don't need to check. Taillight automatically comes on when front light does.
Standing light: stays lit for 4 min after the bike stops.
Beam depth and width automatically adjusts according to speed to optimize your vision.
Handlebar-mounted buttons control all features, so you don't have to reach down to change anything.
Overvoltage protection: you'll never fry the light when racing down a mountain pass.