Watch Series 6 44mm vs Watch Series 8 45mm

The Apple Watch Series 6 and Series 8 share many of the same features and specs, but the Series 8 adds a few standout features.

The Apple Watch Series 6 spec list includes an S6 SiP with a 64-bit dual-core processor, Bluetooth 5.0, and options for a 40mm or 44mm case size.

In comparison, the Apple Watch Series 8 spec list includes an S8 SiP with a 64-bit dual-core processor, a temperature sensor, crash detection, an IP6X rating for dust-resistance, Bluetooth 5.3, fast charging, and options for a 41mm or 45mm case size.

Common specs found on the Series 6 and Series 8 Apple watches include an always-on Retina display, a W3 wireless chip, a U1 ultra-wideband chip, 32GB of storage space, and a Digital Crown with haptic feedback.

Additional shared specs and features include a blood oxygen sensor, an electrical heart sensor, a third-generation optical heart sensor, high and low heart rate notifications, irregular rhythm notification, an ECG app, International emergency calling, Emergency SOS, Fall Detection, water-resistance to 50 meters, GPS/GNSS, a compass, an always-on altimeter, a built-in speaker and microphone, and WiFi (802.11b/g/n).