Watch Series 8 45mm vs Watch Ultra 49mm

The Apple Watch Ultra has a brand new case design with an Action Button, and several new and improved features such as a flat sapphire crystal display, improved GPS, and longer battery life. Of course, the Apple Watch Ultra also shares many of the same features as the Apple Watch Series 8.

The Apple Watch Ultra and the Apple Watch Series 8 both feature an always-on Retina display, an S8 SiP with a 64-bit dual-core processor, a W3 wireless chip, a U1 ultra-wideband chip, a Digital Crown with haptic feedback, a temperature sensor, 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, Crash Detection, Fall Detection, an IP6X rating for dust-resistance, WiFi (802.11b/g/n), Bluetooth 5.3, GPS/GNSS, a compass, an always-on altimeter, 32GB of storage space, and fast charging.

The Apple Watch Ultra features a max brightness of 2000 nits on the display, water-resistance to 100 meters, L1 and L5 GPS, GLONASS, Galileo, QZSS, and BeiDou, a water temperature sensor, a depth gauge, dual speakers with a three-mic array with beamforming, and a 49mm case size. To compare, the Apple Watch Series 8 feature set includes a max brightness of 1000 nits on the display, water resistance to 50 meters, a built-in speaker and microphone, and 41mm and 45mm case sizes.