Una is a $249 modular GPS running watch from a Scottish startup led by Lewis Allison that aims to be repairable and open-source. It resembles a chunky 46mm GPS watch with a 1.2-inch Memory-In-Pixel LCD (240 x 240), exposed USB-C, Torx T3 screws and swappable modules for display, PPG sensor, GPS, Bluetooth and a Core containing a Cortex-M33 microcontroller, 2.5MB RAM, 4GB eMMC, altimeter, temp sensor, vibration motor and a 280mAh battery. Battery life is claimed at seven to 10 days (reviewer saw seven) and GPS at 20 hours; dual-frequency GPS locked quickly. Modularity forces trade-offs: the watch is only IPX5-rated (splash resistant), gaskets look thin, and durability is lower than rival rugged trackers.
Software and user experience are basic: it’s a phone-connected GPS device, not a full smartwatch, with limited workout types, minimal face customization, notification handling that ignores phone Do Not Disturb, and immature UX. The platform is openly published on GitHub and a small community has already built apps (including Doom). Repairability is the standout: parts are cheap ($50 display, $40 battery) and replacements are fast (display in 3:08, battery in ~2 minutes) using common T3 tools. Overall, the watch is an impressive first step toward sustainable, repairable wearables, trading off ruggedness and polish for modularity and openness.
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