Casio watch with step counter and Bluetooth. Does it sync with Apple health?
"A hackable ARM Cortex M0+ upgrade for a classic Casio wristwatch"
Simplified with no printing and fewer separators around the widgets,
Printable adapters for the AE-1200 Casio watch
Sells supplies for modding Casio watches
Delightfully nerdy post about removing paint from a Casio.