Magicshine Seemee 400 Rear Bike Light

Magicshine Seemee 400 Rear Bike Light

The Magicshine SEEMEE 400 Rear Light is Magicshine’s flagship smart tail light, designed for cyclists who want maximum visibility, smarter safety features, and seamless connectivity with modern cycling devices. Built for road riders and urban commuters alike, it combines high-power illumination, intelligent sensors, and wireless integration to keep you visible in all conditions.

With a powerful 400-lumen output, the SEEMEE 400 features an upgraded motion sensor that triggers an Instant Boosting Alert when braking. The light instantly bursts to full brightness to warn traffic behind you, improving reaction time for drivers and riders.

The signature OptiTracing light projects a 360° red halo onto the road surface, dramatically improving visibility from all angles. This is combined with wide rear illumination to ensure vehicles approaching from behind or the side can clearly see you.

Connectivity is where the SEEMEE 400 stands out. Using ANT+ wireless integration, the light can connect directly with compatible cycling computers such as Garmin, Wahoo, and Hammerhead, allowing control directly from your handlebars. It also supports PelotonSync Flash, automatically syncing flash patterns with nearby compatible Magicshine lights for coordinated group riding visibility.

For riders using Magicshine accessories, the light also supports FTR LightSync Control, allowing synchronized front and rear light operation using the MJ-6558 remote.

With long runtime, USB-C fast charging, and a durable IPX6 waterproof design, the SEEMEE 400 is built for everyday commuting, long endurance rides, and group cycling adventures.

Key Features:

• Maximum 400 lumens output for exceptional rear visibility
• Instant Boosting Alert brake sensor increases brightness when braking
• 360° OptiTracing ground light improves awareness for vehicles behind
• ANT+ connectivity for control via compatible bike computers
• PelotonSync Flash synchronises flash patterns with nearby Magicshine lights
• FTR LightSync Control supports remote front-rear light control
• Up to 107 hours runtime depending on mode
• USB-C fast charging for convenient recharging
• Lockout function prevents accidental activation during transport
• Quarter-turn mounting system for quick installation on seatposts or saddle rails
• IPX6 waterproof rating for reliable use in rain and harsh weather

Specifications:

• Max Output: 400 Lumens
• Max Runtime: Up to 107 Hours
• Connectivity: ANT+ compatible
• Charging Port: USB-C
• Mounting System: Quarter-turn mount
• Waterproof Rating: IPX6

What’s in the Box:

• Magicshine SEEMEE 400 Rear Light
• Mounting system
• USB-C charging cable
• User manual