SEEMEE 400 is a powerful and comprehensive rear light, perfect for road cycling, city use, and daily commuting. It features two light sources, a main light and an OptiTracing light. The main light uses two high-power LEDs with a maximum luminous intensity of 400 lumens for marked visibility in traffic, while the OptiTracing projects a 360° red glow onto the road, making you visible from every direction. The 1600 mAh battery ensures a maximum runtime of up to 107 hours, with USB-C charging. The aluminum alloy body and IPX6-certified waterproofing guarantee resistance to rain and splashes.

For mounting, you can easily attach the SEEMEE 400 to the saddle or seatpost in seconds thanks to the quarter-turn mount. An integrated motion sensor detects braking and momentarily boosts the luminous intensity up to 400 lm as a brake signal. ANT+ connectivity allows light control from the cycling computer (Bryton, Garmin, Wahoo, Hammerhead), while the FTR LightSync function enables synchronization with the front light. It also includes PelotonSync Flash mode to align the flashing with other compatible rear lights on the bikes of other members of your group.