Choose models to compare.
Series 8
SE
Ultra
Images
Category
GPS
GPS
Not Applicable
GPS + Cellular
GPS + Cellular
GPS + Cellular
GPS + Cellular
Finish
Not Applicable
Not Applicable
Titanium
Aluminum
Aluminum
Aluminum
Not Applicable
Stainless steel
Stainless steel
Not Applicable
Not Applicable
Quick look
45mm or 41mm case size
Edge-to-edge display
44mm or 40mm case size
Not Applicable
49mm case size
Flat sapphire front crystal with display edge protection
Case Size- 2
Certified IP6X dust resistant◊Refer to legal disclaimers
Not Applicable
Certified IP6X dust resistant◊Refer to legal disclaimers
Tested to MIL-STD 810H◊Refer to legal disclaimers
Customizable Action button
Display
Always-On Retina display
Up to 1000 nits brightness
Nearly 20% more screen area than Apple Watch SE
Retina display
Up to 1000 nits brightness
Not Applicable
Always-On Retina display
Up to 2000 nits brightness
Nearly 27% more screen area than Apple Watch SE
Water resistant
Water resistant◊Refer to legal disclaimers
50m
Swimproof
Water resistant◊Refer to legal disclaimers
50m
Swimproof
Water resistant◊Refer to legal disclaimers
100m
Swimproof and recreational diving to 40m
Water resistant- 2
Not Applicable
Not Applicable
EN13319 certification
Depth gauge with water temperature sensor
Oceanic+ app◊Refer to legal disclaimers for use as a dive computer
Blood oxygen
Blood Oxygen app◊Refer to legal disclaimers
ECG app◊Refer to legal disclaimers
High and low heart rate notifications
Irregular rhythm notification◊Refer to legal disclaimers
Not Applicable
Not Applicable
High and low heart rate notifications
Irregular rhythm notification◊Refer to legal disclaimers
Blood Oxygen app◊Refer to legal disclaimers
ECG app◊Refer to legal disclaimers
High and low heart rate notifications
Irregular rhythm notification◊Refer to legal disclaimers
Temperature sensing
Temperature sensing◊Refer to legal disclaimers
Cycle tracking with retrospective ovulation estimates◊Refer to legal disclaimers
Not Applicable
Cycle tracking◊Refer to legal disclaimers
Temperature sensing◊Refer to legal disclaimers
Cycle tracking with retrospective ovulation estimates◊Refer to legal disclaimers
Emergency SOS
Emergency SOS◊Refer to legal disclaimers
International emergency calling◊Refer to legal disclaimers
Fall Detection
Crash Detection
High-g accelerometer
Gyroscope
Compass Backtrack
Not Applicable
Emergency SOS◊Refer to legal disclaimers
International emergency calling◊Refer to legal disclaimers
Fall Detection
Crash Detection
High-g accelerometer
Gyroscope
Compass Backtrack
Not Applicable
Emergency SOS◊Refer to legal disclaimers
International emergency calling◊Refer to legal disclaimers
Fall Detection
Crash Detection
High-g accelerometer
Gyroscope
Compass Backtrack
86-decibel Siren to attract attention
Audible up to 180 meters
Compass
Redesigned Compass app with multiple views
Compass Waypoints and Backtrack
GPS
Always-on altimeter
Redesigned Compass app with multiple views
Compass Waypoints and Backtrack
GPS
Always-on altimeter
Redesigned Compass app with multiple views
Compass Waypoints and Backtrack
Precision dual-frequency GPS
Always-on altimeter
Available Cellular Connectivity
Available cellular connectivity◊Refer to legal disclaimers
Available cellular connectivity◊Refer to legal disclaimers
Cellular connectivity◊Refer to legal disclaimers
Battery
Up to 18 hours◊Refer to legal disclaimers
Fast charge◊Refer to legal disclaimers
Up to 18 hours◊Refer to legal disclaimers
Not Applicable
Up to 36 hours◊Refer to legal disclaimers
Fast charge◊Refer to legal disclaimers