The largest, most advanced Always-On Retina display makes everything look bigger and better on the Apple Watch Series 7. The new series introduces the most durable Apple Watch ever made with an even stronger crystal. The advanced features it incorporates allow you to measure your blood oxygen level, perform an ECG at any time, and have access to health monitoring apps. You can also track dozens of workouts, such as the new tai chi and pilates. The Apple Watch Series 7 is aimed at those who want a smartwatch with multiple functions, such as health and fitness monitoring and communication with other users.