45mm - Nike S7 (GPS) Watch Midnight Aluminum Case with Black Nike Sport Band - (Midnight)

The largest, most advanced Always-on Retina display yet makes everything you do with your Apple Watch Series 7 bigger and better. Series 7 is the most durable Apple Watch ever built, with an even more crack-resistant front crystal. Advanced features let you measure your blood oxygen level,¹ take an ECG anytime, and access mindfulness and sleep tracking apps. You can also track dozens of workouts, including new tai chi and pilates.