The Pixel Watch 2 includes several small but welcome improvements that generally make the whole package better.
Google Pixel Watch 2 Review: The Upgrade I've Been Waiting For - CNET
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Pixel Watch 2 won't be compatible with original Pixel Watch cases
The Pixel Watch 2 comes with three new advanced sensors for heart rate tracking, skin temperature, and stress management[1,2]; 100% recycled light
Google Pixel Watch 2 with the Best of Fitbit and Google - Heart Rate Tracking, Stress Management, Safety Features - Android Smartwatch - Matte Black
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The Pixel Watch 2 is a little better in every way
If you skipped out on last year's Pixel Watch and want a clean, versatile Android wearable that doubles as a FitBit, the Pixel Watch 2 is for you.
Google Pixel Watch 2
Google Pixel Watch 2 vs. Pixel Watch: Is it time to upgrade?
Google Pixel Watch 2 vs. Pixel Watch: Is It Worth Upgrading? - CNET
Buy the Google Pixel Watch 2 with Google Fi Wireless
Pixel Watch 2 - Wikipedia
Google Pixel Watch 2 Should Solve the First One's Biggest Shortcomings - CNET
Buy the Google Pixel Watch 2 with Google Fi Wireless