CMF by Nothing Watch Pro 2. Key Features: This model features a 1.32-inch AMOLED display, interchangeable bezels, and supports Bluetooth phone calls with Al noise reduction. Pairing Process: The QR code on the screen is for pairing the watch with your smartphone, typically through the CMF Watch app. Health and Fitness: It includes health monitoring features such as heart rate tracking, blood oxygen (SpO2) monitoring, and sleep tracking