<p>Models:</p><p>Apple offers various models, including the Apple Watch SE (a more budget-friendly option), and the latest Apple Watch Series 9 with advanced features like the S9 chip and on-device Siri processing.</p><ul><li>Connectivity:</li></ul><p>You can choose between GPS-only models or GPS + Cellular models, which allow for calls and texts even without your iPhone nearby, and also offer international roaming capabilities. </p><ul><li>Features:</li></ul><p>Newer models like the Series 7 and Series 9 include health-oriented features such as blood oxygen level measurement, ECG app, and sleep tracking. </p>