Apple Watch Series 5 has a display that’s always on, showing the time and important information - no need to raise your wrist. It helps you navigate with the built-in compass. Lets you check on your heart with the ECG app. Tracks your workouts and activity. And makes it easy to connect with the people and information you care about, right from your wrist. Originally released September 2019 S5 with 64-bit dual-core processor (Up to 2x faster than S3 processor) Electrical heart sensor (ECG app)¹ Water-resistant to 50 metres² LTPO OLED Always-On Retina display with Force Touch (1,000 nits brightness) Wi-Fi (802.11b/g/n 2.4GHz) Bluetooth 5.0 Second-generation optical heart sensor Accelerometer Gyroscope Ambient light sensor Capacity 32GB³ All-ceramic and sapphire crystal back