Nothing confirms it's working on a smartwatch, by GeekCorner

Military Smart Watch for Men Make/Answer Calls Rugged Tactical Smartwatch Compatible with Android iPhone Samsung 1.39 HD Screen Heart Rate Sleep Monitor Watch 108 Sports Modes Fitness Tracker : Electronics

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Garmin 010-02174-01 vivoactive 4, GPS Smartwatch, Features Music, Body Energy Monitoring, Animated Workouts, Pulse Ox Sensors and More, Silver with Gray Band : Clothing, Shoes & Jewelry

Nothing smartwatch design with transparent sides of the dial has “Nothing” to hide! - Yanko Design

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Garmin 010-02427-01 Venu Sq, GPS Smartwatch with Bright Touchscreen Display, Up to 6 Days of Battery Life, Light Gold and White : Electronics

Nothing smartwatch design with transparent sides of the dial has “Nothing” to hide! - Yanko Design

Nothing Just Confirmed That It's Making A Smartwatch

Kimnix Smart Watch 2022(Make Call Receive/Dial), 1.72 in HD Full Touch Screen Fitness Tracker with Bluetooth Call/Text/Heart Rate/SpO2/Sleep Monitor Smartwatch for Android iOS Mens Women (Black) : Electronics

uGear P-Clock smartwatch with holographic keyboard