When you have a pacemaker, getting in contact with some electronic equipment (e.g. Body Composition Analyzers) is dangerous.
Thanks to the Pacemaker Keychain you can communicate (at low cost) having a pacemaker, even when you forget about it. 

This little thing might one day save your life. 

Don’t stay inside.
Get out. Feel safe. 

Or save lives and gift it to someone with a pacemaker. 

Dimensions 
- 57.1 x 50.7 x 3.8mm
- hole diameter: 4mm

Make it your own
- use it as a keychain or a necklace (check the dimensions of your shackles!) 
- scale however you like

Printing Instruction
- Infill: 70%  (to ensure sturdiness) 
- Iron: enabled (makes it look nice and clean)

Prototype in the picture:
- printed with eSilk Gold PLA (eSun) 1.75mm
- printed on Anycubic Kobra 2 in 32’