Breaking away from the monotonous steady and flashing modes of traditional bicycle taillights, this multifunctional smart taillight co-branded by GRC and Lumii brings a whole new experience to road cycling at night. Equipped with a matrix of high-brightness LED beads, it not only features practical turn signal indicators, but also supports custom drawing of patterns, scrolling text, and personalized dynamic animations via a smartphone app. CT Yeh tests its customization interface, various flashing modes, and seatpost mounting structure on camera. Want to know how to enhance nighttime riding safety while creating eye-catching light effects unique to your bike? Click the video to find out!