Galaxy Watch Ultra vs Apple Watch Ultra 4
Verified 2026-10-03
A factual specification comparison between the Galaxy Watch Ultra and the Apple Watch Ultra 4.
Image: Samsung Electronics
Samsung · SmartwatchGalaxy Watch Ultra
- Status
- Released · 2025-07-25
- Announced
- Announced 2025-07-09
- Verification
- Verified
- Last checked
- Checked 2026-10-03
Image: Apple Inc.
Apple · SmartwatchApple Watch Ultra 4
- Status
- Released · 2026-09-19
- Announced
- Announced 2026-09-09
- Verification
- Verified
- Last checked
- Checked 2026-10-03
Key differences
SpecificationGalaxy Watch UltraApple Watch Ultra 4
Design & Build
| Specification | Galaxy Watch Ultra | Apple Watch Ultra 4 |
|---|---|---|
| Water resistance (differs) | 10 ATM + IP68, MIL-STD-810H tested | 100m water resistance (ISO standard 22810:2010), IP6X dust resistance (IEC 60529), EN13319 recreational scuba diving to 40m, tested to MIL-STD-810H |
| Colors (differs) | Titanium Blue, Titanium Silver, Titanium Gray, Titanium White | Natural, Black |
| Case dimensions (differs) | 47mm case | 49mm height x 44mm width x 12mm depth; fits 130-210mm wrists |
| Build materials (differs) | Titanium Grade 4 | Titanium case (Grade 5) |
Performance
| Specification | Galaxy Watch Ultra | Apple Watch Ultra 4 |
|---|---|---|
| Chipset (differs) | 3nm Processor | Apple S11: 64-bit dual-core processor, 4-core Neural Engine |
Battery & Charging
| Specification | Galaxy Watch Ultra | Apple Watch Ultra 4 |
|---|---|---|
| Battery life (differs) | Up to 60 hours (Always-On Display on) | 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
| Specification | Galaxy Watch Ultra | Apple Watch Ultra 4 |
|---|---|---|
| Cellular connectivity (differs) | Bluetooth + LTE (cellular model) | 5G RedCap and LTE (cellular model, Model A3579) |
| Positioning (differs) | L1+L5 dual-frequency GPS | Precision dual-frequency GPS (GPS, Galileo, QZSS, BeiDou), second-generation Ultra Wideband chip |
Software
| Specification | Galaxy Watch Ultra | Apple Watch Ultra 4 |
|---|---|---|
| Phone compatibility (differs) | Compatible with Samsung Galaxy phones running Android 12 or later (Watch/Wear OS 4.0) | iPhone 11 or later, including iPhone SE (2nd generation or later), with iOS 27 or later |
Security & Sensors
| Specification | Galaxy Watch Ultra | Apple Watch Ultra 4 |
|---|---|---|
| Health sensors (differs) | Energy Score, Sleep Apnea, Bedtime Guidance, High Stress Alert, Running Coach, Personalized Heart Rate Zone, Personalized Functional Threshold Power, AGEs Index, ECG, Irregular Heart Rhythm Notification, Antioxidant Index, Body Composition, Cycle Tracking | 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 |
These are specifications where both devices have a confirmed value and the values differ. A difference is not a judgement that either device is better.
Full specifications
differs · Not disclosed: not published by the manufacturer · —: not recorded
SpecificationGalaxy Watch UltraApple Watch Ultra 4
Design & Build
4 differences
| Specification | Galaxy Watch Ultra | Apple Watch Ultra 4 |
|---|---|---|
| Water resistance (differs) | 10 ATM + IP68, MIL-STD-810H tested | 100m water resistance (ISO standard 22810:2010), IP6X dust resistance (IEC 60529), EN13319 recreational scuba diving to 40m, tested to MIL-STD-810H |
| Colors (differs) | Titanium Blue, Titanium Silver, Titanium Gray, Titanium White | Natural, Black |
| Weight | Not disclosed | Natural: 63.0 g, Black: 63.1 g |
| Case dimensions (differs) | 47mm case | 49mm height x 44mm width x 12mm depth; fits 130-210mm wrists |
| Build materials (differs) | Titanium Grade 4 | Titanium case (Grade 5) |
Display
No differences
| Specification | Galaxy Watch Ultra | Apple Watch Ultra 4 |
|---|---|---|
| Display | Not disclosed | Always-On Retina display, wide-angle OLED, LTPO3 (1Hz minimum refresh), flat sapphire crystal |
| Peak brightness (nits) | 3000 · same on both | |
| Resolution | Not disclosed | 422x514 px (326 ppi) |
Performance
1 difference
| Specification | Galaxy Watch Ultra | Apple Watch Ultra 4 |
|---|---|---|
| Chipset model name | Not disclosed | S11 |
| Chipset (differs) | 3nm Processor | Apple S11: 64-bit dual-core processor, 4-core Neural Engine |
Memory & Storage
No differences
| Specification | Galaxy Watch Ultra | Apple Watch Ultra 4 |
|---|---|---|
| Storage (GB) | 64 · same on both | |
Battery & Charging
1 difference
| Specification | Galaxy Watch Ultra | Apple Watch Ultra 4 |
|---|---|---|
| Charging time | Not disclosed | Up to 80% charge in about 45 minutes (fast-charge capable) |
| Battery capacity (mAh) | 590 | Not disclosed |
| Battery life (differs) | Up to 60 hours (Always-On Display on) | 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
2 differences
| Specification | Galaxy Watch Ultra | Apple Watch Ultra 4 |
|---|---|---|
| Wi-Fi | Not disclosed | Wi-Fi 4 (802.11n), 2.4GHz and 5GHz |
| Bluetooth | Not disclosed | Bluetooth 5.3 |
| Contactless payments | Not disclosed | Apple Pay |
| Cellular connectivity (differs) | Bluetooth + LTE (cellular model) | 5G RedCap and LTE (cellular model, Model A3579) |
| Positioning (differs) | L1+L5 dual-frequency GPS | Precision dual-frequency GPS (GPS, Galileo, QZSS, BeiDou), second-generation Ultra Wideband chip |
Software
1 difference
| Specification | Galaxy Watch Ultra | Apple Watch Ultra 4 |
|---|---|---|
| Operating system at launch | Not disclosed | watchOS 27 |
| Phone compatibility (differs) | Compatible with Samsung Galaxy phones running Android 12 or later (Watch/Wear OS 4.0) | iPhone 11 or later, including iPhone SE (2nd generation or later), with iOS 27 or later |
Security & Sensors
1 difference
| Specification | Galaxy Watch Ultra | Apple Watch Ultra 4 |
|---|---|---|
| Health sensors (differs) | Energy Score, Sleep Apnea, Bedtime Guidance, High Stress Alert, Running Coach, Personalized Heart Rate Zone, Personalized Functional Threshold Power, AGEs Index, ECG, Irregular Heart Rhythm Notification, Antioxidant Index, Body Composition, Cycle Tracking | 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 |
Terms used on this page (7)
- ppi
- Pixels per inch: how densely pixels are packed on the screen.
- Nits
- A unit of screen brightness (candela per square metre). Typical, HDR and outdoor peak figures are measured under different conditions.
- Refresh rate (Hz)
- How many times per second the display can redraw the image.
- IP rating
- Ingress protection under IEC 60529: the first digit rates dust protection, the second water protection, each under the manufacturer's stated test conditions.
- mAh and Wh
- Battery capacity. mAh is charge; Wh also accounts for voltage, so it is the more comparable energy figure across device types.
- OLED
- A display whose pixels emit their own light, so black areas can be fully dark; LCDs use a separate backlight.
- MIL-STD-810H
- A US military test standard. Manufacturers choose which of its tests to run, so it does not imply a specific level of durability.
Sources & verification
Galaxy Watch Ultra
Verified 2026-10-03- Samsung ElectronicsManufacturerTier 1
Apple Watch Ultra 4
Verified 2026-10-03- 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.