Image: Apple Inc.
Apple Watch Ultra 4
Specs verified 2026-10-03 · source
Apple's rugged titanium smartwatch with a 3000-nit LTPO3 display, the S11 chip, 5th-generation satellite connectivity, and up to 50 hours of battery life.
Official product pageAt a glance
Device overview
Display
Always-On Retina display, wide-angle OLED, LTPO3 (1Hz minimum refresh), flat sapphire crystal, with 422x514 px (326 ppi) resolution and up to 3000 nits peak brightness.
Chip
Powered by Apple S11: 64-bit dual-core processor, 4-core Neural Engine.
Health & sensors
Health and sensor features: Second-generation electrical heart sensor, Always-on optical heart sensor, Blood oxygen sensor, Temperature sensor, Depth gauge, Water temperature sensor, Compass, Always-on altimeter, High-g accelerometer, High dynamic range gyroscope, Ambient light sensor.
Battery
Battery life: Up to 50 hours normal use; up to 84 hours in Low Power Mode; up to 18 hours workout tracking; up to 25 hours Extended Workout; up to 45 hours Max Extended Workout.
Connectivity
Supports Wi-Fi 4 (802.11n), 2.4GHz and 5GHz, Bluetooth 5.3, 5G RedCap and LTE (cellular model, Model A3579), and Apple Pay.
Case & design
Measures 49mm height x 44mm width x 12mm depth; fits 130-210mm wrists, with 100m water resistance (ISO standard 22810:2010), IP6X dust resistance (IEC 60529), EN13319 recreational scuba diving to 40m, tested to MIL-STD-810H and Titanium case (Grade 5).
Specifications
| Design & Build | |
| Water resistance | 100m water resistance (ISO standard 22810:2010), IP6X dust resistance (IEC 60529), EN13319 recreational scuba diving to 40m, tested to MIL-STD-810H |
|---|---|
| Colors | Natural, Black |
| Weight |
|
| Case dimensions | 49mm height x 44mm width x 12mm depth; fits 130-210mm wrists |
| Build materials | Titanium case (Grade 5) |
| Display | |
| Display | Always-On Retina display, wide-angle OLED, LTPO3 (1Hz minimum refresh), flat sapphire crystal |
| Peak brightness | 3000 nits |
| Resolution | 422x514 px (326 ppi) |
| Performance | |
| Chipset model name | S11 |
| Chipset | Apple S11: 64-bit dual-core processor, 4-core Neural Engine |
| Memory & Storage | |
| Storage | 64 GB |
| Battery & Charging | |
| Charging time | Up to 80% charge in about 45 minutes (fast-charge capable) |
| Battery life | Up to 50 hours normal use; up to 84 hours in Low Power Mode; up to 18 hours workout tracking; up to 25 hours Extended Workout; up to 45 hours Max Extended Workout |
| Connectivity | |
| Wi-Fi | Wi-Fi 4 (802.11n), 2.4GHz and 5GHz |
| Bluetooth | Bluetooth 5.3 |
| Contactless payments | Apple Pay |
| Cellular connectivity | 5G RedCap and LTE (cellular model, Model A3579) |
| Positioning | Precision dual-frequency GPS (GPS, Galileo, QZSS, BeiDou), second-generation Ultra Wideband chip |
| Software | |
| Operating system at launch | watchOS 27 |
| Phone compatibility | iPhone 11 or later, including iPhone SE (2nd generation or later), with iOS 27 or later |
| Security & Sensors | |
| Health sensors | Second-generation electrical heart sensor, Always-on optical heart sensor, Blood oxygen sensor, Temperature sensor, Depth gauge, Water temperature sensor, Compass, Always-on altimeter, High-g accelerometer, High dynamic range gyroscope, Ambient light sensor |
Sources & verification
This device is fully verified: every required fact is confirmed from a Tier 1 (manufacturer/official) source.
- Apple Inc.Manufacturer specificationsTier 1
- Apple Inc.ManufacturerTier 1
Tier 1 sources are the manufacturer's own product pages, technical specification sheets, or support documentation. Tier 2 sources are reputable independent technical references, used only for facts that couldn't be confirmed from official documentation. Last verified 2026-10-03.