44.0 x 38.0 x 10.4
368 x 448
977 sq mm
Over 30% larger display than Series 39
Aluminum or Stainless Steel (depending on model selected)
Up to 18 hours5
Built-in rechargeable lithium-ion battery
Magnetic charging cable
64-bit dual-core processor
Internal memory storage
Up to 32GB
Ask Siri to set a reminder, send an invitation, or give you directions, all without your phone.
Bands 1, 2, 3, 4, 5, 7, 12, 13, 17, 18, 19, 25, 26, 39, 40, 41, 66
Required to use smartwatch over cellular; rate plan required.
Track a casual walk, an intense ride, and everything in between.
Set workout-specific goals, see full summaries when you’re done, and track how you’re trending over time.
Generates an ECG similar to a single-lead electrocardiogram.
Keep tabs on your resting, walking, and workout recovery heart rate.
Ambient light, accelerometer, barometric altimeter, built-in GPS, gyroscope, second-generation optical heart rate, electrical heart rate (ECG app)7, Blood oxygen sensor2
Messaging & email