A modular GPS watch with an open SDK, replaceable components and a whole heap of potential for wrist-based tinkering.
UNA is a sports watch that you can make your own, inside and out. With interchangeable hardware, open-source applications and tools for writing your own code, it's a lovely little platform for experimenting with wearable tech.
Make your own watch app or clock face, put the onboard sensors to work, or build that handy little tool you've always wanted on your wrist. UNA's public C++ SDK gives you access to live sensor data for creating custom activity modes, timers, widgets and more. GPS, heart rate and motion sensing give you plenty of interesting inputs to play with!
Getting started means grabbing the SDK and reference apps, adapting a working example and compiling with CMake. There's a desktop simulator for testing your creation, then you can copy the .uapp file to your watch over USB and take it for a spin. Find the tools and examples on UNA's developer platform.
The hardware is designed to evolve too. Interchangeable components let you repair your watch at home with a single tool**, including swapping out the battery or display. UNA also publishes its housing and circuit board designs under a CC BY 4.0 licence, along with the watch's kernel firmware, which you can build and install yourself. Excellent news for folks who like to know what's going on under the bonnet.
It's well equipped for outdoor adventures, with multi-satellite GPS, continuous heart-rate tracking and a clear, low-power MIP display. USB-C charging means you can top it up with a standard cable, ready for your next outing.
The free UNA companion app for iOS and Android syncs your activities to Strava, shows detailed pace, heart-rate and elevation charts, and lets you change watch settings. There are no subscription fees.
Features
- Native C++ app development with an open SDK
- Reference apps and desktop simulator
- Install your own apps over USB
- Cortex-M33 processor, 2.5MB RAM and 4GB storage
- 1.2" 240 × 240 MIP LCD with LED backlight
- GPS, heart-rate monitoring and Bluetooth LE 5.2
- Accelerometer, gyroscope, magnetometer and barometric altimeter
- Haptic vibration and piezo sounder
- Replaceable hard-shell battery and display
- USB-C charging
- Up to 10 days of everyday use or 20 hours of GPS tracking*
*Battery-life figures quoted by UNA. See the product page for more hardware details.
In the box
- UNA Watch
- Silicone strap
- USB-C cable (0.5m)
- Quick start guide