Una Watch Review: The GPS Smartwatch Built to Evolve with You (2025)

Most GPS watches become landfill after just a few years. Dead batteries, cracked screens, or outdated hardware. The Una Watch changes that narrative completely. Built with sustainability and performance in mind, it’s a modular GPS smartwatch that can evolve with you. Whether you’re an athlete, developer, or tech enthusiast, Una gives you full control over your watch, your data, and your upgrades.

Meet UNA — The World’s First Modular GPS Sports Watch

UNA takes a bold step toward the future of wearable technology. Instead of throwing away your watch every few years, you can replace or upgrade individual parts (the processor, sensors, or battery) with simple tools and new modules.

This design philosophy doesn’t just extend the product’s life. It gives you ownership. You decide when to upgrade, repair, or customize, not the manufacturer.

Your New Training Companion

Built with precision and practicality, UNA delivers real-time GPS tracking, heart rate monitoring, and post-activity insights through a minimalist UI that adapts to your needs. Whether you’re running, hiking, or cycling, it keeps pace with your performance, and your progress.

GPS Watches Aren’t Built to Last — Until Now

Most sports watches fail after just a few years due to sealed batteries, fragile screens, and obsolete hardware. UNA fixes that problem permanently. If your battery degrades or a module becomes outdated, just swap it. No service center required, no waste created.

This repairable and upgradeable design ensures your watch stays relevant (and running) for years to come.

Meet the Watch That Evolves with You

Every part of UNA can be upgraded. Need new sensors for future health metrics? Install a new sensor module. Cracked your screen? Replace it easily. Want better performance? Swap out the processor core.

This modular flexibility means UNA will grow with you and with technology, unlocking new possibilities without forcing another expensive purchase every few years.

Say Hello to USB-C Charging

Forget proprietary charging cables. UNA uses a standard USB-C port. the same one you use for your phone. It’s a small change that simplifies your setup and future-proofs your gear. The port is fully IPX8 waterproof, meaning the internals are completely sealed and safe from water damage.

How UNA Compares

Built for Longevity

Traditional GPS watches are disposable; UNA isn’t. Its modular design allows you to replace parts at any time, extending its life indefinitely.

Track Every Step with Precision

With dual-frequency GPS, altimeter, and accelerometer, UNA provides pinpoint tracking accuracy for runners, cyclists, and hikers, even in dense forests or urban canyons.

Unmatched Battery Life

Enjoy up to 10 days of battery life in everyday mode or 20 hours in full GPS mode. And when the battery ages? Swap it for a new one, no technician needed.

Health Monitoring That Evolves

Track heart rate, blood oxygen (SpO₂), step count, and more with upgradable sensors that keep pace with future health tech innovations.

One Cable for Life

USB-C is the standard (no more proprietary cables). Charge anywhere, anytime, with the same cord as your phone or laptop.

UNA Mobile App

The UNA experience extends beyond the watch. The companion mobile app (available on iOS and Android) gives you full control over your training data, insights, and customization.

• Track Your Progress: Sync runs, rides, and hikes for detailed post-activity analytics.
• Customize Your Watch: Adjust settings, update firmware, and personalize your data screens easily.
• Upgrade Over Time: As new sensors and features release, your app will automatically keep your watch up to date.

The intuitive interface ensures your UNA Watch only improves with time, not the other way around.

Choices and Design

UNA launches in three sleek colorways to fit any style:

• Black – Timeless and professional
• Teal – Sporty and fresh
• White – Minimal and modern

Each variant includes a matching silicone strap, with optional extras available in any of the three colors.

Developer-Friendly by Design

UNA is not just a watch, it’s a platform. With both a Software Development Kit (SDK) and a Hardware Development Kit (HDK), UNA invites creators to innovate and expand what’s possible.

• Code Your Own Apps: Build and install third-party apps, custom watch faces, or workout trackers tailored to your goals.
• Expand with New Hardware: Create and integrate new sensors or hardware modules that enhance UNA’s functionality.
• Open-Source Innovation: Contribute to a developer-driven ecosystem built around transparency, flexibility, and collaboration.

With the optional UNA ‘Dev’ Tool, developers can plug directly into the USB-C port for real-time programming and debugging. This level of access is almost unheard of in consumer-grade wearables.

Honest Pros and Cons

• ✅ Pro: Fully modular and repairable design that ends planned obsolescence
• ✅ Pro: Dual-frequency GPS for pinpoint accuracy
• ✅ Pro: Long-lasting, replaceable battery (up to 10 days per charge)
• ✅ Pro: USB-C charging with waterproof IPX8 rating
• ✅ Pro: Open-source SDK and HDK for developers and innovators
• ✅ Pro: Sustainable design philosophy and recyclable materials
• 🟡 Con: Smaller app ecosystem compared to major brands
• 🟡 Con: Requires some technical know-how for advanced customization
• 🟡 Con: Limited retail availability at launch

Who Should Choose the UNA Watch

• Eco-conscious users: Who value repairable, long-lasting products over disposable tech
• Serious athletes: Who want accurate data and complete control over their training metrics
• Developers: Who want to code their own apps, watch faces, or firmware tweaks
• Tech enthusiasts: Who love open-source hardware and user-driven innovation
• Data privacy advocates: Who want to own their data without cloud lock-ins

Final Verdict: The Smartwatch That Redefines Ownership

The Una Watch is more than a smartwatch, it’s a declaration of independence from planned obsolescence. Its modular hardware, open-source foundation, and developer-friendly tools create a wearable ecosystem designed to last for years, not seasons.

While it may lack the polished ecosystem of Apple or Garmin, what it offers is far more valuable: freedom, longevity, and true ownership of your tech.

If you’re tired of throwing away good devices just because a battery died or a chip got faster, the Una Watch is your sustainable alternative, built to evolve with you, one module at a time.