Magicshine SEEMEE 400 Smart Bike Tail Light

The SEEMEE 400 is a completely upgraded version of the SEEMEE 300: 360° follow light + high-transparency optical light guide strip to achieve no blind spots and strong warning; upgraded with FTR multi-light interconnection and team synchronized flashing technology, and also supports intelligent brake warning/vibration wake-up, ANT + bike computer pairing and light control, empowered by multiple core black technologies, making it smart and convenient, and doubling the riding safety efficiency.

FEATURES: ● Dual high-power LEDs output up to 400 lumens for strong road presence and added safety. ● Optillumin lens ensures a well-balanced beam with extended side reach. ● Signature OptiTracing light projects a 360° glowing halo for all-around safety. ● 5 modes: Low, High, Night Flash, Day Flash, and Eco Flash — take your pick. ● Smart brake sensor triggers a full 400-lumen alert for added stopping safety. ● Auto sleep after 5 minutes of inactivity, wakes instantly with vibration. ● FTR LightSync enables remote sync between front and tail lights for streamlined use. ● ANT+ integration enables direct control via Garmin, Wahoo, and Hammerhead computers. ● PelotonSync Flash syncs with nearby taillights for coordinated group visibility. ● Lockout function prevents accidental activation during transport or storage. ● Built with a lightweight aluminum housing for lasting durability and a polished look. ● Powered by a 1600mAh battery, delivering up to 107 hours of runtime. ● Quick quarter-turn mount fits securely on seatposts or saddle rails. ● Mode memory function, easy-to-read indicators and USB-C rechargeable. ● IPX6 waterproof rating, built to withstand harsh weather.
  DESCRIPTION: Looking for an upgrade in visibility and control? SEEMEE 400 takes everything great about the SEEMEE 300—and turns it up a notch. With higher output, expanded visibility, smarter syncing, and deeper integration, it’s built for road cyclists and urban riders who expect more from their taillight.
  360° Visibility, Trusted by Pros:
  Both SEEMEE 300 and SEEMEE 400 feature Magicshine’s signature OptiTracing light, projecting a 360° glowing halo onto the road for all-around visibility—a favorite among pro cyclists for its unmistakable presence in low light condition. The Optillumin lens remains the same across both models, offering powerful rear and side illumination through a compact, clean design.
  Instant Boosting Alert:
  Both SEEMEE 300 and 400 feature brake detection—but SEEMEE 400 pushes it further with an instant 400-lumen burst triggered by an upgraded motion sensor. It reacts faster and brighter, giving traffic behind more time to respond and enhancing safety at every brake.
  Next-Level Connectivity and Control:
  As Magicshine’s flagship taillight, SEEMEE 400 brings unmatched integration and coordination to your ride.PelotonSync Flash lets multiple lights flash in unison—automatically syncing with nearby compatible Magicshine taillights. Your group appears as a unified presence, boosting visibility and cohesion on the road.FTR LightSync Control links seamlessly to the MJ-6558 remote for front-rear control at the push of a button. Prefer
  cockpit integration? The SEEMEE 400 connects directly with Garmin, Wahoo, and Hammerhead bike computers via ANT+—giving you effortless control right from your handlebars.
  Built for Every Ride:
  SEEMEE 400 delivers up to 107 hours of runtime, USB-C fast charging, and a lockout function to prevent accidental activation. Its IPX6 waterproof rating ensures all-weather reliability, while the quarter-turn mount offers quick, secure installation on seatposts or saddle rails.
  SEEMEE 400 is not just a brighter version of SEEMEE 300—it’s a smarter, safer, and more connected evolution. For riders who go farther and ride smarter, it’s the taillight that keeps pace.