Bracelet Wrist Band Case for Yubico Security Key C and Yubikey 5C

I frequently misplace things: jewelry, my car keys, and occasionally my hardware security key.  I also travel frequently, so I wanted a solution that would keep my security key on my person at all times.  

I designed this case to allow me to wear my security key on my wrist as a bracelet.  It fits my Yubico Security Key C NFC, but it should also fit non-NFC Security Keys as well as the Yubikey 5C (both NFC and non-NFC versions).  I primarily use NFC with my security key, but I've also included a slider mechanism that allows you to extend and retract the USB C connector if you ever need to plug it in.

INSTRUCTIONS:

1. Print all parts with the flat side down on the print bed.  No supports needed.
2. The model pictured was printed with Hatchbox PLA using PrusaSlicer's 0.1mm DETAIL default settings, with 15% infill.  It could also be printed at 0.2mm, but the curved parts that hold the watch strap on will look more stair stepped.
3. To assemble: The case is made up of 3 interlocking parts to hold the security key in place, just insert the security key into the case, push the small pin up through the back and snap the entire thing together with the larger top pin.  The interlocking pins should hold together with friction, but you can also use a drop of super glue inside the hole in the bottom pin for a more secure connection.  Once assembled, it should fit on any 18mm watch band.

A few things to note, I have smaller wrists so this may not be wide enough for larger wrists. Also, if there is interest in using this with the regular USB version of the Security Key/Yubikey 5, I can modify this design to accommodate both.  I just need to a measurement of the width of the USB connector on the regular version.  Enjoy!