tl;dr: UNA is a Scotland-built GPS smartwatch designed for repairability and longevity, featuring a user-replaceable 280 mAh battery, USB-C charging, and screwdriver-accessible internals for swapping components like the screen. It includes dual-frequency GPS, continuous heart rate monitoring, a barometric altimeter, 10-day battery life, and Strava sync via a companion iOS/Android app. An open SDK lets developers build custom apps, activities, and watch faces with direct access to sensors and data.