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As of August 2026, the correct Samsung rival to Apple Watch Ultra 3 is the new Galaxy Watch Ultra2, announced on July 22 and generally available from August 7, 2026. The original Galaxy Watch Ultra is still sold and may be discounted, but it is a different, older model.
The short verdict is platform-dependent: Apple Watch Ultra 3 is the better choice for iPhone owners, while Galaxy Watch Ultra2 is the stronger Android option, with a larger battery, brighter display, and newer Snapdragon Wear Elite platform. Neither is a universal winner.
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Apple Watch Ultra 3 vs Galaxy Watch Ultra2: the quick verdict
| Category | Winner | Why |
|---|---|---|
| iPhone compatibility | Apple Watch Ultra 3 | Designed around the iPhone and Apple services |
| Android compatibility | Galaxy Watch Ultra2 | Works with Android; Samsung phones provide the fullest feature set |
| Battery hardware | Galaxy Watch Ultra2 | 800 mAh battery versus 590 mAh in the original Galaxy Watch Ultra |
| Documented endurance | Apple Watch Ultra 3 | Apple publishes normal-use and workout estimates |
| Peak brightness | Galaxy Watch Ultra2 | Rated up to 5,000 nits versus 3,000 nits |
| Off-angle readability | Apple Watch Ultra 3 | Wide-angle OLED is designed to improve viewing from the side |
| Performance | No verified winner | There is no reliable independent head-to-head benchmark for these exact models |
| Satellite safety features | Apple Watch Ultra 3 | Built-in satellite communication is available in supported situations and regions |
For an iPhone owner, ecosystem compatibility matters more than a 5,000-nit display or a larger battery. For an Android owner who regularly hikes, records GPS workouts, or leaves a phone behind, the Ultra2 is the more natural purchase.
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Samsung now has three relevant references:
- Galaxy Watch Ultra: the original model launched in 2024 and refreshed in 2025 with additional storage and finish options.
- Galaxy Watch Ultra2: the current 2026 flagship, with an 800 mAh battery, brighter display, faster charging, and a newer processor platform.
- Apple Watch Ultra 3: Apple’s current premium outdoor smartwatch.
This article compares Apple Watch Ultra 3 with Galaxy Watch Ultra2. If you are considering the original Galaxy Watch Ultra, see the dedicated comparison near the end.
#1 Best Overall
- Durable, woven cable with fast-charging capabilities for select Apple Watch models. Simply hold the connector near the back of the watch, where magnets cause it to snap into place automatically.
- Supports fast charging on Apple Watch Series 7 and later and Apple Watch Ultra models. Supports regular charge times on all other models.
- Compatible with all Apple Watch
- USB-C Cable Length: 1m or 3.2 feet
Specifications compared
| Feature | Apple Watch Ultra 3 | Galaxy Watch Ultra2 |
|---|---|---|
| Platform | watchOS and iPhone ecosystem | Wear OS/One UI Watch and Android ecosystem |
| Processor | Apple S10 system chip | Qualcomm Snapdragon Wear Elite Platform |
| Display | Always-on Retina OLED, LTPO3, 422 × 514 pixels | 1.52-inch/38.5 mm display |
| Peak brightness | Up to 3,000 nits | Up to 5,000 nits |
| Protection | Sapphire crystal | Sapphire crystal |
| Battery | Up to 42 hours normal use | 800 mAh; Samsung emphasizes capacity and fast charging |
| GPS | Dual-frequency GPS | Dual-frequency GPS |
| Cellular | Cellular model available | LTE model |
| U.S. price reference | $799 reported MSRP; Apple has shown promotional pricing | $699.99 observed U.S. price for the 47 mm LTE model |
Prices are market- and promotion-dependent. Apple’s product page has shown a $719 education price, while Samsung’s U.S. buying page lists the Ultra2 at $699.99. Treat those as dated offers rather than permanent retail prices.
Battery life: Galaxy Watch Ultra2 has the stronger hardware case
Apple Watch Ultra 3 is rated for up to 42 hours of normal use, up to 72 hours in Low Power Mode, and up to 14 hours of outdoor workout tracking with full GPS and heart-rate readings. Apple also says a 15-minute charge can provide up to 12 hours of normal use.
Galaxy Watch Ultra2 has an 800 mAh battery and Samsung says it can reach up to 40% charge in approximately 30 minutes. That is a substantial capacity increase over the original Galaxy Watch Ultra’s 590 mAh cell.
These claims are not directly equivalent. Apple publishes scenario-based runtime figures; Samsung’s Ultra2 material emphasizes capacity and charging speed rather than an equivalent normal-use or GPS-workout estimate. A larger battery does not automatically produce proportionally longer battery life because screen brightness, LTE, GPS behavior, processor efficiency, and software power management all matter.
Battery verdict: Ultra2 is the likely endurance winner on specifications alone, particularly for multi-day outdoor use, but that is not the same as a verified real-world result. Apple offers the clearer published expectations. Ultra2 is the better choice if quick top-ups and battery capacity matter most; Apple is easier to plan around because its operating scenarios are more specific.
Rank #2
- 【Safe and Fast Wireless Watch Charging】- Our wireless charger provides a safer and faster charging mode,for a more convenient charging experience,Please take off the watch case and use a 5V/1A adapter or original adapter（ETL/UL Certified）.
- 【Wide Compatible】- Our wireless batteries charger is compatible with iWatch series Ultra2/Ultra/12/11/10/9/8/7/6/SE2/SE/5/4/3/2 (including the 38 mm/40 mm/41 mm/42 mm/44 mm/45 mm Version).Please take off the watch case and use a 5V/1A adapter or original adapter（ETL/UL Certified）.
- 【Portable design】- This 3.3Ft charging cable for apple watch is convenient to carry around, especially for traveling，and is suitable as a backup charger for your watch.Please take off the watch case and use a 5V/1A adapter or original adapter（ETL/UL Certified）.
- 【Advanced Safety】- Built-in protection device with safety functions such as overcurrent,overvoltage,short circuit and overtemperature protection. Protect your watch battery from overcharging damage.pls note:this is support usb c port,so pls use a usb c PD adapter,and 20w-30w is the best to use.Please take off the watch case and use a 5V/1A adapter or original adapter（ETL/UL Certified）.
- 【12-Month Quality Assurance 】- As a responsible brand seller, you will receive xiwxi's 12-month Quality assurance and friendly customer service.Please take off the watch case and use a 5V/1A adapter or original adapter（ETL/UL Certified）.
GPS workouts, cellular use, music streaming, always-on display, frequent notifications, sleep tracking, and voice assistants can materially reduce either watch’s runtime. Samsung’s power-saving modes may also reduce tracking or connectivity features.
Display: Samsung wins brightness; Apple emphasizes viewing angles
Galaxy Watch Ultra2 has a 1.52-inch display rated at up to 5,000 nits, which gives it the headline advantage for bright outdoor conditions. Samsung describes it as the brightest display used on a Galaxy Watch.
Apple Watch Ultra 3 reaches up to 3,000 nits and uses an always-on wide-angle LTPO3 OLED. Its refresh rate can fall to 1 Hz, helping reduce power consumption during static always-on content. Apple’s wide-angle design is intended to keep information easier to read when the watch is viewed from the side rather than straight on.
Display verdict: Choose Ultra2 for the higher rated peak brightness and larger listed display. Choose Apple Watch Ultra 3 if off-angle readability and always-on efficiency are more important. Peak brightness is not sustained brightness, however, and does not by itself prove which screen is easier to read in every lighting condition. Direct sunlight, viewing angle, gloves, automatic brightness behavior, and always-on settings all matter.
Performance: hardware claims are not benchmark results
Apple Watch Ultra 3 uses Apple’s S10 chip. Galaxy Watch Ultra2 uses Qualcomm’s Snapdragon Wear Elite Platform. Samsung claims faster performance, quicker app launches, and smoother interaction on the Ultra2.
Rank #3
- 【Wide Compatible】- Our wireless charger is compatible with iWatch series Ultra/10/9/8/7/6/SE2/SE/5/4/3/2/1 (including the 38 mm/40 mm/41 mm/42 mm/44 mm/45 mm Version)
- 【Portable design】-This 1.0M iWatch charging cable is convenient to carry around, especially for traveling，and is suitable as a backup charger for your watch.
- 【Advanced Safe & Rapid Charging】– Experience enhanced safety and speed with our wireless watch charger, delivering a 0% to 100% charge in under 3 hours.
- 【Smart Protection】 - Equipped with advanced safety mechanisms including over-current, over-voltage, short-circuit, and over-temperature protection. Automatically adjusts charging power to prevent overheating and overcharging, ensuring your premium watch battery remains healthy and extends its lifespan. Certified for safe, worry-free wireless charging day and night.
- 【12-Month Quality Assurance 】- As a responsible brand seller, you will receive xiwxi's 12-month Quality assurance and lifetime friendly customer service.
Those are manufacturer claims, not a controlled comparison. No reliable independent benchmark directly comparing Ultra2 and Ultra 3 establishes a definitive processor winner. Apple’s advantage is its tightly integrated hardware and software stack, while Samsung’s advantage is newer-generation platform hardware and integration with Wear OS, One UI Watch, Gemini, and Samsung services.
In practical use, the meaningful tests are app launch time, map loading, workout start time, scrolling, voice-assistant response, notification handling, GPS lock time, Bluetooth reconnection, LTE calls, and workout-recording stability. Without controlled testing of both watches, claims that one is categorically faster should be treated cautiously.
Performance verdict: There is no responsible measured winner yet. Apple is the safer bet for consistency inside the iPhone ecosystem; Ultra2 is the more promising choice for Android users who want Samsung’s newest platform and AI features.
Fitness, GPS, health, and outdoor use
Both watches target serious outdoor and fitness users rather than casual notification checking. Both support dual-frequency GPS, heart-rate tracking, elevation and barometric data, sleep tracking, multisport workouts, cellular connectivity, sapphire crystal protection, and rugged construction.
Apple Watch Ultra 3’s major safety differentiator is built-in satellite communication for emergency services and messaging in supported situations. Availability, regions, and usage limits apply, and it should not be treated as a replacement for a dedicated satellite communicator.
Rank #4
- Compatible with all Apple Watch: Our wireless charger is compatible with iWatch series 12 11 10 9 8 7 6 SE3 SE2 SE 5 4 3 2 1 Ultra4 Ultra3 Ultra2 including 38 mm 40 mm 41 mm 42 mm 44 mm 45 mm 49mm Version. Also compatible with Airpods 4 AirPods Pro 3 AirPods Pro 2
- Efficient Smart Charging: Our watch charger provides safe charging mode, it takes 2 hours to fully charge your S12-S4. Please note: Charging Ultra 4 3 2 1 will take less than 4 hours. We suggest that you purchase our store's 5W fast charging version for your Ultra series
- Multiple Protection: Built-in advanced chip with over-current, over-voltage, short-circuit, over-charge and over-temperature protection and other safety features. Protect your watch battery against damage
- Strong Magnetic Adsorption: The Watch Charger with built-in magnet has strong adsorption perfectly snaps and centers to the charging coil on the back of your watch, stable and will not fall off, resulting in a wonderful charging experience
- Travel Essentials: This 3.3FT 1M Watch charging cable is portable to carry around, especially for traveling and is suitable as a backup charger for your watch
Galaxy Watch Ultra2 adds Samsung’s rugged Ultra design, Quick Button controls, Samsung Health integration, and Android-oriented AI features. The original Ultra materials specify 10 ATM water resistance, IP68 protection, and MIL-STD-810H testing; buyers should check the current Ultra2 specification page for the exact certification details of the newer model.
Health functions such as ECG, blood-pressure monitoring, sleep-apnea detection, hypertension features, and related tools can depend on country, regulatory approval, phone model, account, app, and software version. They are not medical diagnoses or substitutes for professional care.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.Compatibility is the buying gate
For iPhone owners
Apple Watch Ultra 3 is the practical choice. It is designed for the iPhone ecosystem, with Apple’s notifications, health data, apps, safety services, and cellular features working together. Cellular service requires a compatible carrier plan if you want calls, messages, or data away from the iPhone.
Galaxy Watch Ultra2 is not a sensible iPhone alternative. It is designed for Android, and its feature set depends on Android phone compatibility.
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Galaxy Watch Ultra2 is the natural match. Samsung phones provide the broadest access to Samsung Health, AI, and health-related features. Some functions require a compatible Galaxy phone, Samsung account, and Samsung Health app.
Best Value
- 1.5H Efficient Charging : For pleasure charging experience, we recommend you to use 5V/1A adapter with our iWatch charger, which will provide original safe charging via USB-C port 20W Charger and fully charge for Apple watch in 1-1.5H
- Upgraded Watch Smart Chip : Hzevn for iWatch charger is equipped with automatic chip recognition, built-in magnet charging module, over-current, over-voltage and over-temperature protection to provide a safe charging environment for your watch
- High-Quality Materials : Excellent TPE charging cable, offering robust durability and flexibility. The 3 feet cable accommodating different daily scenarios
- Compatible with Apple Watch : Hzevn for iWatch charger fast charging works with iWatch Ultra2 Ultra Series 11/10/9/8/7/6/SE/SE2/5/4/3/2/1- including 38mm 40mm 42mm 44mm 46mm 49mm versions
- 2Pack You Will Get : 2Pack 3FT 5W USB C to iWatch Cable White. 2Pcs watch chargers,You can use one for home and the other for the office
For non-Samsung Android owners
Galaxy Watch Ultra2 remains the relevant option, but do not assume complete feature parity. Samsung identifies features that may be unavailable or limited on non-Samsung Android devices. Check your exact phone model and region before buying, especially if ECG, blood pressure, sleep-apnea tools, or AI functions are important.
Which one should you buy?
- Buy Apple Watch Ultra 3 if you own an iPhone. It offers the best ecosystem integration, documented battery scenarios, wide-angle display design, and satellite safety features.
- Buy Galaxy Watch Ultra2 if you use Android. It offers the larger battery, faster charging claim, brighter screen, and Samsung/Gemini-oriented software experience.
- Choose Ultra2 for the brightest rated display. Its 5,000-nit specification leads Apple’s 3,000-nit rating.
- Choose Apple for off-angle readability. The wide-angle OLED is a specific design advantage, although peak brightness figures cannot establish overall screen superiority.
- Choose Ultra2 for likely multi-day endurance. Its 800 mAh cell is the stronger hardware signal, but wait for controlled testing before treating that as a confirmed runtime victory.
- Choose Apple for satellite safety communication. Availability and limitations depend on location and service conditions.
- Choose the original Galaxy Watch Ultra only when it is substantially cheaper. It gives up Ultra2’s 800 mAh battery, 5,000-nit display, newer Snapdragon platform, and faster charging.
Galaxy Watch Ultra vs Galaxy Watch Ultra2
The original Galaxy Watch Ultra has a 590 mAh battery, a 1.47-inch display rated at up to 3,000 nits, and advertised endurance of up to 60 hours with the always-on display enabled. Samsung also lists up to 100 hours in Power Saving Mode and up to 48 hours in Exercise Power Saving Mode.
Ultra2 increases the battery to 800 mAh, expands the display to 1.52 inches, raises the rated brightness to 5,000 nits, and moves to the Snapdragon Wear Elite Platform. The older model can be good value at a deep discount, but paying close to Ultra2 pricing removes much of the reason to choose it.
Sources and current pricing
- Apple Watch Ultra 3
- Apple Watch Ultra 3 technical specifications
- Samsung Galaxy Watch Ultra2 specifications
- Samsung Galaxy Watch Ultra2 U.S. buying page
- Samsung’s Ultra2 announcement
- Original Galaxy Watch Ultra
- Apple Watch Ultra 3 review context
The Bottom Line
Bottom line: Apple Watch Ultra 3 is the better buy for iPhone owners, while Galaxy Watch Ultra2 is the better Android flagship. Samsung wins the specification battle for battery capacity and peak brightness; Apple offers clearer published endurance scenarios, stronger off-angle display design, and satellite safety communication. Performance remains unproven as a direct head-to-head category.
Quick Recap
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.
