Compare Apple Watch models

Aluminum

44mm or 40mm case size
-
-
-
-

Retina display
Up to 1000 nits brightness
-

Water resistant 9
Swimproof
-
-
-

-
-
High and low heart rate notifications 14
Irregular rhythm notification 14
Cardio fitness notifications

Sleep tracking
-

-
Cycle tracking 15

Emergency SOS 2
International emergency calling 16
Fall Detection
Crash Detection 2
High-g accelerometer
Gyroscope
Compass Backtrack
-

Redesigned Compass app with waypoints and backtrack
GPS
Always-on altimeter

Available cellular connectivity 17
International roaming 18
Supports Family Setup
(GPS + Cellular models) 3
Connect family members who don't have an iPhone

Up to 18 hours 20
-

Aluminum
Stainless Steel

45mm or 41 mm case size
Edge-to-edge display
Certified IP6X dust resistant 5
-
-

Always-On Retina display
Up to 1000 nits brightness
Nearly 20% more screen area than Apple Watch SE

Water resistant 9
Swimproof
-
-
-

Blood Oxygen app 12
ECG app 13
High and low heart rate notifications 14
Irregular rhythm notification 14
Cardio fitness notifications

Sleep tracking
-

Temperature sensing 1
Cycle tracking with retrospective ovulation estimates 15

Emergency SOS 2
International emergency calling 16
Fall Detection
Crash Detection 2
High-g accelerometer
Gyroscope
Compass Backtrack
-

Redesigned Compass app with waypoints and backtrack
GPS
Always-on altimeter

Available cellular connectivity 17
International roaming 18
Supports Family Setup
(GPS + Cellular models) 3
Connect family members who don't have an iPhone

Up to 18 hours 20
Fast charge 21

Aluminum
Stainless Steel

45mm or 41 mm case size
Edge-to-edge display
Certified IP6X dust resistant 5
-
-

Always-On Retina display
Up to 2000 nits brightness
Nearly 20% more screen area than Apple Watch SE

Water resistant 9
Swimproof
-
-
-

Blood Oxygen app 12
ECG app 13
High and low heart rate notifications 14
Irregular rhythm notification 14
Cardio fitness notifications

Sleep tracking
Sleep apnea notifications 3

Temperature sensing 1
Cycle tracking with retrospective ovulation estimates 15

Emergency SOS 2
International emergency calling 16
Fall Detection
Crash Detection 2
High-g accelerometer
Gyroscope
Compass Backtrack
-

Redesigned Compass app with waypoints and backtrack
GPS
Always-on altimeter

Available cellular connectivity 17
International roaming 18
Supports Family Setup
(GPS + Cellular models) 3
Connect family members who don't have an iPhone

Up to 18 hours 20
Fast charge 21

Titanium

49mm case size
Flat sapphire front crystal with display edge protection
Certified IP6X dust resistant 5
Tested to MIL-STD 810H 7
Customizable Action button

Always-On Retina display
Up to 2000 nits brightness
Nearly 27% more screen area than Apple Watch SE

Water resistant 9
Swimproof and recreational dive to 40m
EN13319 certification
Depth gauge with water temperature sensor
Oceanic+ app for use as a dive computer (available on App Store) 11

Blood Oxygen app 12
ECG app 13
High and low heart rate notifications 14
Irregular rhythm notification 14
Cardio fitness notifications

Sleep tracking
-

Temperature sensing 1
Cycle tracking with retrospective ovulation estimates 15

Emergency SOS 2
International emergency calling 16
Fall Detection
Crash Detection 2
High-g accelerometer
Gyroscope
Compass Backtrack
86-decibel Siren to attract attention
Audible up to 600 feet

Redesigned Compass app with waypoints and backtrack
Precision dual-frequency GPS
Always-on altimeter

Available cellular connectivity 17
International roaming 18
Supports Family Setup
(GPS + Cellular models) 3
Connect family members who don't have an iPhone

Up to 36 hours 20
Fast charge 21

Titanium

49mm case size
Flat sapphire front crystal with display edge protection
Certified IP6X dust resistant 5
Tested to MIL-STD 810H 7
Customizable Action button

Always-On Retina display
Up to 3000 nits brightness
Nearly 27% more screen area than Apple Watch SE

Water resistant 9
Swimproof and recreational dive to 40m
EN13319 certification
Depth gauge with water temperature sensor
Oceanic+ app for use as a dive computer (available on App Store) 11

Blood Oxygen app 12
ECG app 13
High and low heart rate notifications 14
Irregular rhythm notification 14
Cardio fitness notifications

Sleep tracking
Sleep apnea notifications 3

Temperature sensing 1
Cycle tracking with retrospective ovulation estimates 15

Emergency SOS 2
International emergency calling 16
Fall Detection
Crash Detection 2
High-g accelerometer
Gyroscope
Compass Backtrack
Siren

Redesigned Compass app with waypoints and backtrack
Precision dual-frequency GPS
Always-on altimeter

Available cellular connectivity 17
International roaming 18
Supports Family Setup
(GPS + Cellular models) 3
Connect family members who don't have an iPhone

Up to 36 hours 20
Fast charge 21

Aluminum
Titanium

46mm or 42 mm case size
-
Certified IP6X dust resistant 5
-
-

Wide-angled OLED Always-On Retina display
Up to 2000 nits brightness
Nearly 30% more screen area than Apple Watch SE

Water resistant 9
Swimproof
-
-
-

Blood Oxygen app 12
ECG app 13
High and low heart rate notifications 14
Irregular rhythm notification 14
Cardio fitness notifications

Sleep tracking
Sleep apnea notifications 3

Temperature sensing 1
Cycle tracking with retrospective ovulation estimates 15

Emergency SOS 2
International emergency calling 16
Fall Detection
Crash Detection 2
High-g accelerometer
Gyroscope
Compass Backtrack
-

Redesigned Compass app with waypoints and backtrack
GPS
Always-on altimeter

Available cellular connectivity 17
International roaming 18
Supports Family Setup
(GPS + Cellular models) 3
Connect family members who don't have an iPhone

Up to 18 hours 20
Fast charge 21
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