Discreet, alternative-wear fitness tracker for traditional watch wearers.

Create a compact, accurate fitness tracker designed to be worn discreetly on parts of the body other than the wrist (e.g., bicep, ankle, attached to clothing via a clip). This product would allow users who prefer to wear traditional watches for fashion or formality to still collect essential health and activity data (steps, sleep, heart rate) without the bulk or aesthetic clash of a smartwatch on the wrist.