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Which Apple Watch models work with watchOS 27

by Dave Johnson

Welcome to Apple Watch, the versatile wrist-worn companion that can help motivate you to be more active, track important health information, stay in touch with those who matter most to you, and so much more—with or without your iPhone. Each model below is shown front and back. watchOS 27 is compatible with the following models:

  • Apple Watch Series 12
  • Apple Watch Ultra 4
  • Apple Watch Series 11
  • Apple Watch Ultra 3
  • Apple Watch SE 3
  • Apple Watch Series 10
  • Apple Watch Ultra 2
  • Apple Watch Series 9

Apple Watch Series 12

The front of Apple Watch Series 12, with the display showing the watch face, and the Digital Crown, microphone, and side button from top to bottom on the side of the watch.

The back of Apple Watch Series 12, with the band release buttons at top and bottom, the health sensing system in the middle, and the speaker on the side.

Note: Blood Oxygen app measurements are not intended for medical use. For models of Apple Watch purchased in the United States on or after January 18, 2024 with part numbers ending in LW/A or LS/A, the Blood Oxygen data analysis is performed on iPhone, and results can be viewed in the Health app.

Apple Watch Ultra 4

The front of Apple Watch Ultra 4, with the display showing the watch face, and the Depth gauge/Water Temperature sensor, Digital Crown, microphone, side button, and another microphone from top to bottom on the side of the watch.

The back of Apple Watch Ultra 4, with the band release buttons at top and bottom. On the side are a microphone, a speaker, the health sensing system, the Action button, and a speaker port from which the siren emits.

Note: Blood Oxygen app measurements are not intended for medical use. For models of Apple Watch purchased in the United States on or after January 18, 2024 with part numbers ending in LW/A or LS/A, the Blood Oxygen data analysis is performed on iPhone, and results can be viewed in the Health app.

Apple Watch Series 11

The front of Apple Watch Series 11, with the display showing the watch face, and the Digital Crown, microphone, and side button from top to bottom on the side of the watch.

The back of Apple Watch Series 11, with the band release buttons at top and bottom, the electrical heart sensors, optical heart sensors, and blood oxygen sensors in the middle, and the speaker on the side.

Note: Blood Oxygen app measurements are not intended for medical use. For models of Apple Watch purchased in the United States on or after January 18, 2024 with part numbers ending in LW/A or LS/A, the Blood Oxygen data analysis is performed on iPhone, and results can be viewed in the Health app.

Apple Watch Ultra 3

The front of Apple Watch Ultra 3, with the display showing the watch face, and the Depth gauge/Water Temperature sensor, Digital Crown, microphone, side button, and another microphone from top to bottom on the side of the watch.

The back of Apple Watch Ultra 3, with the band release buttons at top and bottom. On the side are a microphone, a speaker, the electrical heart sensor, the Action button, a speaker port from which the siren emits, blood oxygen sensors, and optical heart sensors.

Note: Blood Oxygen app measurements are not intended for medical use. For models of Apple Watch purchased in the United States on or after January 18, 2024 with part numbers ending in LW/A or LS/A, the Blood Oxygen data analysis is performed on iPhone, and results can be viewed in the Health app.

Apple Watch SE 3

The front of Apple Watch SE 3, with the display showing the watch face, and the Digital Crown, microphone, and side button from top to bottom on the side of the watch.

The back of Apple Watch SE 3, with the band release buttons at top and bottom, the optical heart sensor in the middle, and the speaker on the side.

Apple Watch Series 10

The front of Apple Watch Series 10, with the display showing the watch face, and the Digital Crown, microphone, and side button from top to bottom on the side of the watch.

The back of Apple Watch Series 10, with the band release buttons at top and bottom, the electrical heart sensors, optical heart sensors, and blood oxygen sensors in the middle, and the speaker on the side.

Note: Blood Oxygen app measurements are not intended for medical use. For models of Apple Watch purchased in the United States on or after January 18, 2024 with part numbers ending in LW/A or LS/A, the Blood Oxygen data analysis is performed on iPhone, and results can be viewed in the Health app.

Apple Watch Ultra 2

The front of Apple Watch Ultra 2, with the display showing the watch face, and the Depth gauge/Water Temperature sensor, Digital Crown, microphone, side button, and another microphone from top to bottom on the side of the watch.

The back of Apple Watch Ultra 2, with the band release buttons at top and bottom. On the side are a microphone, a speaker, the electrical heart sensor, the Action button, a speaker port from which the siren emits, blood oxygen sensors, and optical heart sensors.

Note: Blood Oxygen app measurements are not intended for medical use. For models of Apple Watch purchased in the United States on or after January 18, 2024 with part numbers ending in LW/A or LS/A, the Blood Oxygen data analysis is performed on iPhone, and results can be viewed in the Health app.

Apple Watch Series 9

The front of Apple Watch Series 9, with the display showing the watch face, and the Digital Crown, microphone, and side button from top to bottom on the side of the watch.

The back of Apple Watch Series 9, with the band release buttons at top and bottom, the electrical heart sensors, optical heart sensors, and blood oxygen sensors in the middle, and the speaker on the side.

See also

Tag: watchOS

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