Apple Watch
Which Apple Watch is right for you?
45mm or 41mm
Swimproof
IP6X dust resistance
–
–
44mm or 40mm
Swimproof
–
–
–
49mm
Swimproof19
IP6X dust resistant20
MIL-STD 810H certification21
Action button
Always‑On Retina display
Up to 1000nits
Retina display
Up to 1000nits
Always-On Retina Display
Up to 2000nits
Blood oxygen app
–
Blood oxygen app
EGG app
–
EGG app
High and low heart
rate notifications
Irregular heart
rhythm notification
High and low heart
rate notifications
Irregular heart
rhythm notification
High and low heart
rate notifications
Irregular heart
rhythm notification
Temperature sensing
Cycle tracking
with retrospective
ovulation estimates
–
Cycle tracking
Temperature sensing
Cycle tracking
with retrospective
ovulation estimates
Emergency SOS
International emergency calling
Fall detection
Crash detection
–
Emergency SOS
International emergency calling
Fall detection
Crash detection
–
Emergency SOS
International emergency calling
Fall detection
Crash detection
86-decibel Siren to attract attention
Cellular available
Family Setup — pair multiple
watches with one iPhone
Cellular available
Family Setup — pair multiple
watches with one iPhone
Cellular available
Family Setup — pair multiple
watches with one iPhone
