I set out to make a glowing, sound-reactive wristband — but my first try with TPU 95A was a total fail.  

After some help from the BambuLab forum, I fixed my filament settings and finally got amazing results!  

For this second batch of LED wristbands, I’m using fully pre-assembled PCB boards and custom LED strips, all packed tightly into a 3D-printed TPU shell. The design is compact, requires no extra fasteners, and charges via micro-USB.  

With the push of a button, you can switch between fixed color modes and enjoy the light show.