Apple Watch Ultra 4 (49mm, GPS + Cellular)
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- 49mm Grade 5 titanium case, flat sapphire crystal, 3,000-nit Always-On Retina display
- Up to 50 hours of battery life, 84 hours in Low Power Mode; 80% charge in about 45 minutes
- S11 chip, 64GB storage, 5G RedCap cellular and dual-frequency GPS
- Satellite Emergency SOS, Messages and Find My when off the grid
- 100m water resistance, scuba diving to 40m, IP6X dust rating, MIL-STD 810H tested
- Background heart rate every five seconds, readiness score, hypertension notifications and Sleep Score
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About the Apple Watch Ultra 4 (49mm, GPS + Cellular)
The Apple Watch Ultra 4 is Apple's largest and toughest watch: a 49mm Grade 5 titanium case in natural or black, a flat sapphire crystal and an Always-On Retina display rated at 3,000 nits that uses wide-angle OLEDs and LTPO3 to drop to 1Hz. It is water resistant to 100 metres, rated for recreational scuba diving to 40 metres and IP6X dust resistant.
Battery life is up to 50 hours in normal use, 84 hours in Low Power Mode and up to 45 hours with Max Extended Workout; a fast charge gives 80% in about 45 minutes. Inside is the S11 chip with 64GB of storage, 5G RedCap cellular, dual-frequency GPS and satellite connectivity for Emergency SOS, Messages and Find My when there is no signal.
Health sensors include a second-generation electrical heart sensor, an optical heart sensor now sampled every five seconds in the background, blood oxygen, temperature, depth gauge and water temperature, supporting features such as hypertension notifications, Sleep Score and a readiness score in watchOS. A band and a 1m Magnetic Fast Charger to USB-C cable are in the box.
What reviewers say
Reviews are positive, with the gains in battery and health tracking winning more praise than the unchanged design. Tom's Guide, which ran 22 miles with it, calls it Apple's most competitive endurance wearable yet, and Mashable got roughly three days per charge. Reviewers highlight background heart rate readings every five seconds instead of every five minutes and a long-overdue readiness score (Expert Reviews), and Consumer Reports found heart rate and pulse oximeter readings excellent and accurate. The complaints: Trusted Reviews and Gizmodo say the design is basically identical to the Ultra 3 and getting stale, Expert Reviews says it is no Garmin for stamina, the Audio Intelligence features were not available at review time, and Ultra 3 owners have little reason to upgrade.
Pros
- Best battery life of any Apple Watch: 50 hours rated, about three days in Mashable's testing
- Much denser heart rate data (every five seconds) plus a readiness score
- Accurate heart rate and blood oxygen measurements (Consumer Reports)
- Toughest Apple Watch: 100m water resistance, diving support, satellite SOS
Cons
- Design is essentially unchanged from the Ultra 3, and the 49mm case is big for smaller wrists
- Still well short of Garmin rivals for endurance
- Audio Intelligence features were not available at launch; little reason for Ultra 3 owners to upgrade
Our summary of professional and shopper reviews published elsewhere (Tom's Guide, Trusted Reviews, Expert Reviews, Gizmodo, AppleInsider, Mashable and Consumer Reports), as of Oct 11, 2026. These are not reviews of PAPA YES.
Key specs
| Brand | Apple |
|---|---|
| Model | Apple Watch Ultra 4, 49mm, GPS + Cellular (A3579) |
| Case | Grade 5 titanium (100% recycled), Natural or Black; 49 x 44 x 12 mm |
| Weight | 63.0 g (Natural), 63.1 g (Black) |
| Display | Always-On Retina LTPO3 wide-angle OLED, 422 x 514 pixels, 3,000 nits peak, down to 1Hz; flat sapphire crystal |
| Chip | S11 with 64-bit dual-core processor and 4-core Neural Engine |
| Storage | 64GB |
| Battery | Up to 50 hours; 84 hours in Low Power Mode; up to 45 hours Max Extended Workout; 80% charge in about 45 minutes |
| Connectivity | 5G RedCap and LTE, Wi-Fi 4 (2.4/5GHz), Bluetooth 5.3, dual-frequency GPS (GPS, Galileo, QZSS, BeiDou), second-generation Ultra Wideband |
| Satellite | Emergency SOS, Messages and Find My (free for two years with activation, per Apple) |
| Sensors | Second-generation electrical heart sensor, always-on optical heart sensor, blood oxygen, temperature, depth gauge, water temperature, compass, altimeter |
| Durability | 100m water resistance (ISO 22810:2010); recreational diving to 40m; IP6X dust; MIL-STD 810H tested |
| Wrist fit | 130 to 210 mm |
| In the box | Apple Watch Ultra 4, band, Apple Watch Magnetic Fast Charger to USB-C Cable (1m) |
| Operating system | watchOS |
| Category | Wearables |
| Term | 52 weekly payments |
| Weekly payment | $18.43 |
| Total cost | $958.80 in store credit |
| Availability | In stock |
| SKU | apple-watch-ultra-4-49-mm-2d9ca9 |
