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Apple Watch Ultra 3 launched in 2025 with a 49 mm titanium case, satellite communication, 5G RedCap, and an always-on LTPO3 display. Apple announced a U.S. starting price of $799 at launch, but that is historical pricing: Apple now lists Ultra 4 as its current Ultra generation, and current Ultra 3 price and stock need to be checked with retailers.
Ultra 3’s key differences include a larger active display, Apple-estimated battery life of up to 42 hours, and satellite features for emergency communication, messages, and location sharing in supported regions. It is an iPhone-compatible adventure smartwatch; satellite, cellular, and health-feature availability varies by market.
Apple’s launch announcement and technical specifications document the original product details. Check Apple’s current Watch lineup and regional retailers for current availability.
Apple Watch Ultra 3 specs at a glance
| Specification | Apple Watch Ultra 3 |
|---|---|
| Case | Grade 5 titanium |
| Finishes | Natural titanium and black titanium |
| Dimensions | 49 × 44 × 12 mm |
| Weight | 61.6 g natural titanium; 61.8 g black titanium |
| Wrist fit | 130–210 mm |
| Display | Always-On LTPO3 wide-angle OLED; 1 Hz refresh |
| Resolution and active area | 422 × 514 pixels; 1,245 mm² |
| Brightness | Up to 3,000 nits; 1 nit minimum |
| Cover glass | Flat sapphire crystal |
| Processor and storage | S10 SiP, 64-bit dual-core processor, four-core Neural Engine, 64 GB |
| Connectivity | 5G RedCap and LTE; Wi-Fi 4; Bluetooth 5.3; second-generation Ultra Wideband |
| Positioning | L1/L5 dual-frequency GPS, GPS, GLONASS, Galileo, QZSS, and BeiDou |
| Battery estimate | Up to 42 hours normal use; up to 72 hours in Low Power Mode |
| Charging estimate | Up to 80% in about 45 minutes; 15 minutes can provide up to 12 hours of normal use |
| Water and dust resistance | 100 m water resistance under ISO 22810:2010; IP6X dust resistance |
| Recreational diving | Up to 40 m under EN13319 |
| Health and outdoor sensors | Electrical and optical heart sensors, blood oxygen sensor, temperature sensor, compass, altimeter, accelerometer, gyroscope, ambient-light sensor, depth gauge, and water-temperature sensor |
| Launch price | $799 U.S. starting price, announced September 9, 2025; not a current-price claim |
These are manufacturer specifications and estimates. Apple’s Ultra 3 specifications page includes additional model and regional qualifications.
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What’s new on Apple Watch Ultra 3?
Ultra 3 keeps the 49 mm titanium case size but adds or changes several major features compared with Ultra 2:
- Satellite communication: Emergency SOS, Messages, and Find My location sharing in supported regions, subject to Apple’s terms.
- 5G RedCap: In addition to LTE, where the regional model and carrier support it.
- Larger display: 1,245 mm² active area, with borders Apple says are 24% thinner than Ultra 2’s.
- Wide-angle LTPO3 display: Designed for improved readability when viewed off-axis.
- Longer battery estimate: Up to 42 hours of normal use, versus Ultra 2’s 36-hour rating.
- Faster charging: Apple estimates about 45 minutes to reach 80%.
Many software features, including Sleep Score and hypertension notifications, should not be treated as Ultra 3-only reasons to upgrade. Check Apple’s current software compatibility and availability information before making a buying decision.
Display and physical design
Ultra 3 has a 49 mm Grade 5 titanium case in natural or black, measuring 49 × 44 × 12 mm. Apple lists weights of 61.6 g and 61.8 g, respectively, before adding a band. Its 1,245 mm² always-on display has 422 × 514 pixel resolution, peak brightness up to 3,000 nits, and minimum brightness of 1 nit. A flat sapphire crystal protects the screen.
Apple says the LTPO3 display has borders 24% thinner than Ultra 2’s without enlarging the case. Ultra 2 also has a 3,000-nit peak brightness, so Ultra 3’s display advantage is the larger active area and improved off-angle readability, not a higher peak-brightness rating.
The watch remains a substantial fit. Apple lists compatibility with wrists measuring 130–210 mm, but buyers with smaller wrists may still find it bulky. Consider a smaller Apple Watch if everyday comfort and size matter more than the Ultra’s rugged features.
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Satellite connectivity: what it does and its limits
In supported regions, Ultra 3 can use satellite features when cellular and Wi-Fi coverage are unavailable. Apple lists Emergency SOS, Messages, and Find My location sharing. Find My satellite location updates can be sent once every 15 minutes. Apple says satellite communication is included at no charge for two years with Ultra 3; service, carrier, and regional terms apply.
Emergency SOS and other satellite functions have different requirements. Apple says Emergency SOS via satellite does not require a cellular plan, while Messages and Find My location sharing may require an active plan. Check Apple’s satellite support documentation and satellite feature guide for current coverage and requirements.
What satellite communication cannot do
Ultra 3 is not an unrestricted off-grid satellite messenger. Satellite connection needs a clear view of the sky and can be blocked or slowed by buildings, dense foliage, mountains, cliffs, and canyons. Connection time varies, and location sharing is not continuous tracking. For frequent expedition messaging and tracking, compare a dedicated satellite communicator and its service requirements.
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5G and cellular use
Ultra 3 supports 5G RedCap and LTE, but cellular use requires a compatible carrier plan. With service, supported functions can include calls, messages, notifications, apps, and streaming without the iPhone nearby. Carrier eligibility, plan pricing, roaming, and band support vary by region and model. Check Apple’s cellular support page and your carrier before buying.
GPS workouts and route recording do not require cellular service. The presence of cellular hardware does not mean a cellular plan is required.
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Health features and limitations
Apple lists ECG, heart-rate and irregular-rhythm notifications, sleep features, sleep-apnea notifications, hypertension notifications, wrist-temperature sensing, cycle tracking, and a blood oxygen sensor and app among Ultra 3’s health features. Availability can depend on country, model, software, and regulatory approval. Health features are not a substitute for professional medical advice, diagnosis, or treatment.
Hypertension notifications are not blood-pressure readings
Apple says the feature analyzes optical heart-sensor data over 30-day periods to look for signs associated with chronic high blood pressure. It is a notification, not a cuff-based blood-pressure measurement or diagnosis, and Apple says it will not detect every case. Apple recommends logging blood pressure with a third-party cuff for seven days and sharing the results with a healthcare provider if notified.
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Blood Oxygen availability varies
The specifications list a blood oxygen sensor, but that does not guarantee the Blood Oxygen app or readings are available on every model. Check the watch’s part number and Apple’s current regional feature information before purchase, particularly for U.S. models.
Running, swimming, and outdoor features
Ultra 3 supports running metrics, multisport workouts, cycling metrics, pool and open-water swim tracking, hiking maps, Backtrack, compass functions, and recreational diving features. Apple lists dual-frequency L1/L5 GPS, a compass, always-on altimeter, and depth and water-temperature sensors. GPS performance can vary by route and conditions; no independent comparative test is established by the research for this article.
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- Check for Compatibility: Only compatible with Apple Watch Ultra 4/3/2/Ultra 49mm, Series 12/11/10 46mm, 9/8/7 45mm, SE3/SE2/SE/6/5/4 44mm, 3/2/1 42mm. Fits wrist sizes of 5.5" - 10.2" (140mm - 260mm).
Ultra 3 is rated for swimming and recreational scuba diving to 40 m under EN13319, with 100 m water resistance under ISO 22810:2010 and IP6X dust resistance. These ratings do not make it a technical dive computer. Apple names Oceanic+ as a recreational diving app; check its current plans and availability separately.
Workout Buddy requirements
Workout Buddy availability depends on supported languages, workouts, software, and device requirements. Apple says it requires an Apple Intelligence-supported iPhone nearby and Bluetooth headphones. Check Apple’s current requirements before relying on it.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.Battery life and charging
Apple estimates up to 42 hours of normal use and up to 72 hours in Low Power Mode. It also estimates up to 80% charge in about 45 minutes and up to 12 hours of normal use from a 15-minute charge. These are Apple estimates, not independent test results. Actual battery life varies with cellular and GPS use, signal strength, workouts, brightness, temperature, and apps.
Price and availability
Apple announced a U.S. starting price of $799 on September 9, 2025, with store availability beginning September 19, 2025. Treat that as launch pricing, not as the current Ultra 3 price or a guarantee of current stock. Apple’s current Watch lineup lists Ultra 4. The research available for this article does not establish whether Apple or authorized retailers still sell Ultra 3 new, its current street price, or regional inventory.
Before buying, check a live regional retailer listing for price, condition, band, and stock, and confirm the model’s regional cellular and satellite support. The launch announcement does not establish current availability. The watch’s cellular service, if used, is a separate carrier cost.
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- Compatibility Check: Designed for Apple Watch Ultra 4/3/2/1 49mm. Fits wrist sizes ranging from 5.9" (150mm) to 8.3" (210mm).
- Comfortable Wear: Moving hinges and a soft strap optimize the snug fit on your wrist, enhancing the wearing experience.
- Exceptional Customer Support: Enjoy peace of mind with our worry-free one-year warranty and friendly customer service.
Should Ultra 2 owners upgrade?
Consider Ultra 3 if satellite connectivity, 5G, its larger display, faster charging, or Apple’s higher battery estimate addresses a real need. If an Ultra 2 is working well and those hardware changes do not matter to you, compare its current price and software support before upgrading. Do not base the decision solely on software features that may also be available on compatible older watches.
Frequently Asked Questions
When did Apple Watch Ultra 3 come out?
Apple announced Ultra 3 on September 9, 2025, and said store availability would begin on September 19, 2025.
How much does Apple Watch Ultra 3 cost?
Apple announced a U.S. starting price of $799 at launch. That is historical pricing; check current retailers for Ultra 3’s current price and stock.
Does Apple Watch Ultra 3 have satellite connectivity?
Yes. Apple lists satellite Emergency SOS, Messages, and Find My location sharing in supported regions. Coverage, carrier-plan requirements, and other terms vary.
How long does Apple Watch Ultra 3 battery last?
Apple estimates up to 42 hours in normal use or up to 72 hours in Low Power Mode. Actual endurance varies with use and settings.
Is Apple Watch Ultra 3 suitable for technical diving?
No. Apple rates it for recreational diving to 40 m under EN13319. It should not be treated as a technical dive computer.
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Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.
