Large Always-On OLED Retina Display, Up to 18 Hours of Battery Life, Fast Charging via USB Type-C, Auto Bike Riding Tracking, Blood Oxygen Sensor, Take ECG Readings in Just 30 Seconds, Heart Rate Monitor & Sleep Tracking, Audio- & Video-Guided Meditations, Dust Resistant & Swimproof to 164', QWERTY Keyboard & Scribble Texting, 32GB Storage Capacity. Wireless service plan required for cellular service. Contact your service provider for more details. Apple Watch Series 7 requires an iPhone 6s or later with iOS 15 or later.