Magicshine Seemee 400 Smart Rear Light

Magicshine's flagship taillight, the SEEMEE 400 pairs two high-power LEDs, putting out up to 400 lumens, with a 360° OptiTracing halo, a smart brake sensor and ANT+ control from your bike computer.

Two Striking LEDs

Dual high-power LEDs output up to 400 lumens for strong road presence.

360° OptiTracing Light

The signature OptiTracing light projects a glowing halo in every direction, so you are visible from all sides.

Smart Brake Sensor

Braking triggers a full 400-lumen alert for the traffic behind you.

Computer Integration

ANT+ lets you control the light directly from Garmin, Wahoo and Hammerhead bike computers.

FTR LightSync and PelotonSync Flash

FTR LightSync links the SEEMEE 400 with compatible Magicshine front lights, and PelotonSync Flash syncs its flash with nearby compatible taillights for coordinated group visibility.

Long-Lasting Battery

The 1600mAh battery runs for up to 107 hours in Eco Flash, and USB-C charging takes 2.5 hours.

Easy to Mount

A quick quarter-turn mount fits seatposts or saddle rails.

Features

• Max Output: 400 lumens
• Max Runtime: 107 hours
• 360° visible angle
• 25m beam distance
• 1600mAh battery, USB-C charging in 2.5 hours
• IPX6 waterproof
• 1 metre drop tested
• Auto sleep after 5 minutes, lockout function and mode memory
• Weight: 80g
• Dimensions: 64 x 32 x 35mm

Modes

• Low: 15 lumens, 19 hours
• High: 90 lumens, 8.5 hours
• Night Flash: 45-75 lumens, 8.5 hours
• Day Flash: 400 lumens, 18 hours
• Eco Flash: 30 lumens, 107 hours