Footnotes

• Footnote  ◊ Emergency SOS requires a satellite connection, cellular connection or Wi‑Fi calling with an internet connection from your Apple Watch or nearby iPhone. You can use cellular models of Apple Watch to make an emergency call in many locations, provided that mobile service is available. Some mobile networks may not accept an emergency call from your Apple Watch if your Apple Watch isn’t activated, if it isn’t compatible with or configured to operate on a particular mobile network, or if it isn’t set up for cellular service, or if the mobile network does not support emergency calling over IMS. See support.apple.com/en-ie/108374 (opens in new window) and apple.com/ie/watch/cellular for more information.
• Footnote  ◊◊ GPS performance was evaluated based on route map accuracy in challenging urban environments for outdoor running and walking workouts. Comparison made against industry‑leading dual‑frequency GPS sports watches commercially available at the time of testing in August 2025.
• Footnote  1. All‑day battery life including sleep tracking is based on the following use: 300 time checks, 90 notifications, 15 minutes of app use, a 60‑minute workout with music playback from Apple Watch via Bluetooth and 6 hours of sleep tracking, over the course of 24 hours; Apple Watch Series 11 (GPS) usage includes connection to iPhone via Bluetooth during the entire 24‑hour test; Apple Watch Series 11 (GPS + Cellular) usage includes a total of 4 hours of cellular connection and 20 hours of connection to iPhone via Bluetooth over the course of 24 hours. Battery life in Low Power Mode including sleep tracking is based on the following use: 530 time checks, 160 notifications, 26 minutes of app use, a 60-minute workout with music playback from Apple Watch via Bluetooth and 6 hours of sleep tracking, over the course of 38 hours; Apple Watch Series 11 (GPS) usage includes connection to iPhone via Bluetooth during the entire 38‑hour test; Apple Watch Series 11 (GPS + Cellular) usage includes on-demand cellular connection and 30 hours of connection to iPhone via Bluetooth over the course of 38 hours. Testing conducted by Apple in July and August 2025 using pre‑production Apple Watch Series 11 (GPS) and Apple Watch Series 11 (GPS + Cellular), each paired with an iPhone; all devices tested with pre‑release software. Battery life varies by use, configuration, mobile network, signal strength and many other factors; actual results will vary.
• Footnote  2. Wireless service plan required for cellular service. Contact your service provider for more details. Connection may vary based on network availability. Check apple.com/ie/watch/cellular for participating service providers and eligibility. See support.apple.com/en-ie/HT207578 (opens in new window) for additional setup instructions.
• Footnote  3. Multi-day battery life including sleep tracking is based on the following use: 600 time checks, 180 notifications, 30 minutes of app use, a 60‑minute workout with music playback from Apple Watch via Bluetooth and 6 hours of sleep tracking, over the course of 42 hours; Apple Watch Ultra 3 usage includes a total of 8 hours of cellular connection and 34 hours of connection to iPhone via Bluetooth over the course of 42 hours. Battery life in Low Power Mode including sleep tracking is based on the following use: 900 time checks, 270 notifications, 45 minutes of app use, two 60‑minute workouts with music playback from Apple Watch via Bluetooth and 18 hours of sleep tracking, over the course of 72 hours; Apple Watch Ultra 3 usage includes on‑demand cellular connection and 60 hours of connection to iPhone via Bluetooth over the course of 72 hours. Testing conducted by Apple in July and August 2025 using pre‑production Apple Watch Ultra 3 paired with an iPhone; all devices tested with pre‑release software. Battery life varies by use, configuration, mobile network, signal strength and many other factors; actual results will vary.
• Footnote  4. Compared with other Apple Watch models.