Bangle.js 1 has a non-standard watch strap that is held in by pins that go through the body of the watch.
This is a black replacement strap for Bangle.js 1 (like the original).
Check out how to remove the straps at https://www.espruino.com/Bangle.js+Disassembly
Bangle.js 1 Strap (black)
- Brands Espruino
- Product Code: BANGLEJS_STRAP_K
- Availability: 22
- Ex Tax: £4.99