Decoding Apple Watch Ultra 3: 3000 nit screen, long battery life
Apple Watch Ultra 3 upgraded 1.98-inch OLED screen with 3000 nits and LTPO3 technology; 42-hour battery life, 0-80% charge in 45 minutes; added hypertension warning and satellite SOS in some countries.
Apple Watch Ultra 3 is the new generation of high-end smartwatches, introduced with iPhone 17. Although the overall design is almost the same as Ultra 2, the product focuses on upgrades that have a direct impact on the experience: brighter and larger screen, LTPO3 technology, longer battery life with fast charging, expanded health monitoring features and added satellite communication in emergency situations in some markets.
Display and LTPO3: 3000 nit brightness for outdoor display
The Apple Watch Ultra 3 uses a 1.98-inch OLED display, which is 0.6 inches larger than the Ultra 2 according to the source. Brightness reaches 3000 nits – the highest on an Apple Watch to date – for good readability in a variety of lighting conditions. Apple switched from LTPO2 to LTPO3, aiming for a smoother touch experience while optimizing power consumption.
Battery and charger: 42 hours of use, reduced charging time
The battery capacity is not officially announced; technology experts estimate it at 599 mAh, about 35 mAh higher than the Ultra 2. The optimal combination of the processor chip and LTPO3, the usage time reaches 42 hours in normal mode and 72 hours in Low Power Mode according to Apple's announcement. Fast charging allows charging from 0 to 80% in 45 minutes, 15 minutes shorter than the previous generation.
Health monitoring: added high blood pressure warning, keeping the familiar sensor suite
A notable new feature is the feature to detect signs of chronic hypertension and send early warnings, helping the wearer proactively prevent cardiovascular risks. Ultra 3 continues to be equipped with functions such as ECG, sleep apnea detection, wrist temperature measurement, abnormal heart rate detection and retrospective ovulation estimation. Multidimensional health data collection helps users monitor their body condition over time.
Safety and communication: Satellite SOS with protection features
Inheriting from the iPhone, Apple Watch Ultra 3 supports satellite communication in case of emergency in some countries. When out of cellular and Wi-Fi coverage, users can use Emergency SOS to send rescue signals and locations, send messages via iMessage or SMS, share coordinates with rescue teams and relatives. In Vietnam, this feature is not yet supported; users can still use SOS via cellular or Wi-Fi. The watch also integrates fall detection, collision detection, siren and other safety features.
Durability and diving ability: WR100, military standard and 40m diving support
Ultra 3 meets MIL-STD 810H durability standards, WR100 water resistance. The device can be water-resistant to a depth of 100 m and supports scuba diving with oxygen at a depth of 40 m according to EN13319 standards.
Main technical specifications table
| Category | Information |
|---|---|
| Screen | 1.98 inch OLED, 3000 nit, LTPO3 |
| Battery life | 42 hours (typical), 72 hours (Low Power Mode) |
| Fast charging | 0–80% in 45 minutes |
| Estimated battery | ~599 mAh (estimated, not officially announced) |
| Connect | eSIM; NFC (Apple Pay); iMessage/SMS via satellite in some countries |
| Audio/Voice Recording | Dual speakers, 3 built-in microphones |
| Safe | Emergency SOS; fall and collision detection; siren |
| Health | Chronic hypertension warning; ECG; sleep apnea detection; wrist temperature; irregular heart rate; retrospective ovulation estimation |
| Durability/Water Resistance | MIL-STD 810H; WR100; 40 m scuba diving (EN13319) |
| Case/face | Titanium; 49 mm face size |
Main advantages
- Bright 3000 nit display and 1.98 inch size, optimized for outdoor reading.
- Longer battery life, fast charging shortens charging time.
- Added warning of chronic hypertension signs; diverse health feature set.
- Satellite SOS for emergency support in select countries; full safety features.
- High durability, water resistance WR100, supports diving up to 40 m according to EN13319 standard.
Limitations and challenges
- The overall design is little changed compared to the previous generation.
- Satellite communication feature is not yet supported in Vietnam.
- Only available in 49mm, two colors (natural titanium, black); limited form factor.
- Starting price is 1 million VND higher than Ultra 2 2024.
Compared to Ultra 2 and development direction
Compared to the Apple Watch Ultra 2, the Ultra 3 directly upgrades three pillars: display (larger, brighter screen; LTPO3), energy (42 hours/72 hours; faster charging), and safety - health (hypertension warning; satellite SOS in some countries). These changes focus on users who are active outdoors, sports, and require close health monitoring. In the near future, the ability to expand satellite support will be a notable factor for users in markets that are not yet supported.
Price and version in Vietnam
- Apple Watch Ultra 3 straps trail, alpine, ocean: 23.99 million VND.
- Apple Watch Ultra 3 Milan titanium strap: 26.99 million VND.
The product is officially distributed with only one version of 49 mm face, titanium frame, two color options: natural titanium and black.
