The Pixel Watch 3 represents Google's third attempt at creating a standout smartwatch, and it delivers a host of impressive upgrades. The design remains largely unchanged from the Pixel Watch 2, aside from the addition of a larger 45mm size option. The screen, now dubbed the Actua display, is bigger and brighter, with thinner bezels and improved power efficiency. The display also offers a maximum brightness of 2,000 nits and can dim down to just 1 nit, adapting its refresh rate between 1 and 60Hz for better battery management.

One of the most groundbreaking features is the ability to detect a loss of pulse, which could potentially save lives in cases of heart attacks or other critical health emergencies. The Pixel Watch 3 achieves this by frequently sampling your heart rate and cross-referencing it with other sensors to ensure accurate readings. However, this life-saving feature will initially only be available in Europe, pending regulatory approvals.

The Pixel Watch 3 also enhances its fitness and health tracking capabilities. It includes advanced running metrics, such as stride length and vertical oscillation, and introduces the ability to program custom workouts. Google has also integrated features to help users manage their daily routines, including a “Morning Brief” that provides a summary of your sleep, health metrics, and even the weather.

In terms of interconnectivity, the Pixel Watch 3 leverages Google's ecosystem more than ever. Users can now view their Nest Cam or Nest Doorbell feeds directly from the watch, control Google TV, and even operate their Pixel phone's camera. While some of these features are exclusive to Pixel phone users, the majority of them are designed to work seamlessly across all Android devices, showcasing Google’s vision for a more interconnected digital experience.

Overall, the Pixel Watch 3 marks a significant step forward for Google in the smartwatch space, blending advanced health features with enhanced interconnectivity within the Google ecosystem. However, how well these features perform in real-world use remains to be seen.