Apple
Apple Watch Ultra 3 vs Apple Watch Ultra 4
Device summary
Apple
Apple Watch Ultra 4
Full specifications
| Basic information | ||
|---|---|---|
| Release year | 2025 | 2026 |
| Starting price | — | $799 |
| Display size | — | — |
| Dimensions | 44.0 mm × 49.0 mm × 12.0 mm | 44.0 mm × 49.0 mm × 12.0 mm |
| Weight | 62 g | 63 g |
| Front material | Sapphire crystal | Sapphire crystal |
| Back material | — | — |
| Display | ||
| Display technology | Always-On Retina LTPO3 OLED with wide-angle OLEDs | Always-On Retina LTPO3 OLED with wide-angle OLEDs |
| Resolution | 422 × 514 | 422 × 514 |
| Peak brightness | 3000 nits | 3000 nits |
| Protection | Flat sapphire crystal | Flat sapphire crystal |
| Performance | ||
| Chipset | Apple S10 SiP | Apple S11 SiP |
| Storage | 64 GB | 64 GB |
| Expandable storage | No | No |
| Battery & charging | ||
| Charging standard | Apple Watch Magnetic Fast Charger | Apple Watch Magnetic Fast Charger (up to 80% in about 45 minutes) |
| Battery type | Built-in rechargeable lithium-ion | Built-in rechargeable lithium-ion |
| Connectivity | ||
| Cellular | 5G RedCap and LTE | 5G RedCap and LTE |
| Wi‑Fi | Wi‑Fi 4 (802.11n) | Wi‑Fi 4 (802.11n) |
| Bluetooth | Bluetooth 5.3 | Bluetooth 5.3 |
| NFC | Yes | Yes |
| Satellite | Emergency SOS via satellite | Emergency SOS, Messages, and Find My via satellite |
| Build & durability | ||
| Frame | Grade 5 titanium | Grade 5 titanium |
| Ingress protection | Water resistance 100m; IP6X dust resistance | Water resistance 100m; IP6X dust resistance; EN13319 recreational scuba to 40m |
Basic information
Release year
- Apple Watch Ultra 3
- 2025
- Apple Watch Ultra 4
- 2026
Starting price
- Apple Watch Ultra 3
- —
- Apple Watch Ultra 4
- $799
Display size
- Apple Watch Ultra 3
- —
- Apple Watch Ultra 4
- —
Dimensions
- Apple Watch Ultra 3
- 44.0 mm × 49.0 mm × 12.0 mm
- Apple Watch Ultra 4
- 44.0 mm × 49.0 mm × 12.0 mm
Weight
- Apple Watch Ultra 3
- 62 g
- Apple Watch Ultra 4
- 63 g
Front material
- Apple Watch Ultra 3
- Sapphire crystal
- Apple Watch Ultra 4
- Sapphire crystal
Back material
- Apple Watch Ultra 3
- —
- Apple Watch Ultra 4
- —
Display
Display technology
- Apple Watch Ultra 3
- Always-On Retina LTPO3 OLED with wide-angle OLEDs
- Apple Watch Ultra 4
- Always-On Retina LTPO3 OLED with wide-angle OLEDs
Resolution
- Apple Watch Ultra 3
- 422 × 514
- Apple Watch Ultra 4
- 422 × 514
Peak brightness
- Apple Watch Ultra 3
- 3000 nits
- Apple Watch Ultra 4
- 3000 nits
Protection
- Apple Watch Ultra 3
- Flat sapphire crystal
- Apple Watch Ultra 4
- Flat sapphire crystal
Performance
Chipset
- Apple Watch Ultra 3
- Apple S10 SiP
- Apple Watch Ultra 4
- Apple S11 SiP
Storage
- Apple Watch Ultra 3
- 64 GB
- Apple Watch Ultra 4
- 64 GB
Expandable storage
- Apple Watch Ultra 3
- No
- Apple Watch Ultra 4
- No
Battery & charging
Charging standard
- Apple Watch Ultra 3
- Apple Watch Magnetic Fast Charger
- Apple Watch Ultra 4
- Apple Watch Magnetic Fast Charger (up to 80% in about 45 minutes)
Battery type
- Apple Watch Ultra 3
- Built-in rechargeable lithium-ion
- Apple Watch Ultra 4
- Built-in rechargeable lithium-ion
Connectivity
Cellular
- Apple Watch Ultra 3
- 5G RedCap and LTE
- Apple Watch Ultra 4
- 5G RedCap and LTE
Wi‑Fi
- Apple Watch Ultra 3
- Wi‑Fi 4 (802.11n)
- Apple Watch Ultra 4
- Wi‑Fi 4 (802.11n)
Bluetooth
- Apple Watch Ultra 3
- Bluetooth 5.3
- Apple Watch Ultra 4
- Bluetooth 5.3
NFC
- Apple Watch Ultra 3
- Yes
- Apple Watch Ultra 4
- Yes
Satellite
- Apple Watch Ultra 3
- Emergency SOS via satellite
- Apple Watch Ultra 4
- Emergency SOS, Messages, and Find My via satellite
Build & durability
Frame
- Apple Watch Ultra 3
- Grade 5 titanium
- Apple Watch Ultra 4
- Grade 5 titanium
Ingress protection
- Apple Watch Ultra 3
- Water resistance 100m; IP6X dust resistance
- Apple Watch Ultra 4
- Water resistance 100m; IP6X dust resistance; EN13319 recreational scuba to 40m
Key differences
The most meaningful measured gaps in size and weight — not an overall winner.
Height
Very similar height
Width
Very similar width
Thickness
Very similar thickness
Weight
Very similar weight
Height, width, thickness, and weight are very similar between these devices.