The Google Pixel Watch 5 and Pixel Watch 4 look identical with the same domed glass design, fast charging, and Wear OS 7. But under the hood, things differ.

The Pixel Watch 5 packs 50% more RAM, 2x storage, a faster processor, more accurate GPS, and on-device Gemini Nano. For just $30 more, it's a worthwhile upgrade for future AI features.

The Pixel Watch 4 remains excellent, and you can likely find it at a significant discount. It's a solid choice for workout tracking and messaging, though it may miss future Gemini features due to less RAM.

Both watches share the same dimensions, sensors, and 3,000-nit display. The Watch 5 has 3GB RAM and 64GB storage, while the Watch 4 has 2GB and 32GB. Battery life is similar. If you want longevity and AI, get the Watch 5. If budget matters, the Watch 4 is a great buy.