Best overall replacement: choose the Suunto Race 3S if long, multi-band GPS sessions matter most; the Samsung Galaxy Watch Ultra for Android smartwatch features and advanced health sensors; the Garmin Venu X1 for iPhone users who want structured training with fewer charges; or the Amazfit Cheetah 2 Pro for a running-focused watch with strong battery value.
The right choice depends on whether you mean battery in everyday watch mode or endurance while recording GPS. Huawei rates the Watch GT 7 Pro for up to 21 days in light use, 12 days in typical use and 51 hours in trail-running mode, so no alternative wins every category.
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Shortlist at a glance
| Watch | Published watch-mode endurance | Published or observed GPS endurance | Best fit | Main trade-off |
|---|---|---|---|---|
| Suunto Race 3S | Up to 12 days (Suunto, 2026) | Up to 38 hours of multi-band GPS (Suunto, 2026); five to six days in a demanding daily-GPS test with high brightness and always-on display (Tom’s Guide/Future, 2026) | Endurance running, ultramarathons and route-focused training | Fewer broad smartwatch-app features than a Wear OS watch |
| Samsung Galaxy Watch Ultra | Up to 100 hours between charges (TechRadar, 2026); another configuration is listed at 72 hours (Android Central, 2026) | Android Central lists 13–16 hours of GPS for one configuration (2026) | Android users who want calls, apps and extensive health sensors | Battery varies substantially by model, settings and use |
| Garmin Venu X1 | Up to nine days with always-on display disabled (TechRadar, 2026) | Not stated in the cited material | iPhone owners who prioritize structured training and readiness guidance | Always-on display reduces the headline endurance; no controlled accuracy comparison with Huawei |
| Amazfit Cheetah 2 Pro | Up to 17 days (Android Central, 2026) | Up to 29 hours of continuous GPS (Android Central, 2026) | Runners seeking long battery life at a lower-complexity, training-first profile | Shorter continuous-GPS figure than Suunto’s published 38 hours |
These figures are not laboratory-equivalent measurements. Manufacturers quote different modes, while reviewers may use always-on displays, daily GPS and higher brightness. Treat them as planning numbers rather than a cross-brand ranking.
What the Huawei Watch GT 7 Pro baseline includes
Huawei’s UK product page (2026) rates the GT 7 Pro at up to 21 days in light use, up to 12 days in typical use and up to 51 hours in trail-running mode. The gap between those figures illustrates why a replacement should be judged on the mode you actually use: passive timekeeping, regular workouts or continuous route recording.
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The watch combines Sunflower Positioning with AI-XDR for route tracking, offline maps, more than 110 workout modes, running-power and running-dynamics metrics, golf-course data and diving support to 40 metres. Its health tools include heart-rate, heart-rate-variability, sleep and stress analysis, plus a Physical Readiness Score generated after three days and nights of continuous wear (Huawei, 2026).
An alternative therefore has to be evaluated on more than the longest number on a box. Consider GPS duration during an event, whether maps work without a phone, the depth of training guidance, compatibility with your phone and the health sensors available in your region.
Best alternative for endurance GPS: Suunto Race 3S
Battery and GPS behavior
Suunto lists the Race 3S for up to 12 days in watch mode and up to 38 hours of multi-band GPS tracking (Suunto, 2026). That 38-hour figure is the relevant comparison for an ultramarathon, stage event or multi-day route; the 12-day number assumes a much lighter pattern of use.
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Why runners choose it
- Multi-band GPS is designed for difficult environments where reflected signals around buildings, cliffs or dense trees can challenge a single-band receiver.
- The long continuous-GPS rating gives more margin for ultras than watches whose headline battery number only describes standby or ordinary smartwatch use.
- Its profile is centered on routes and endurance activities rather than a large app catalog.
Where it is less suitable
If you want a broad selection of wrist apps, cellular-style smartwatch services, frequent voice interactions or the deepest phone integration, a Wear OS model is a better match. The Race 3S is most compelling when recording a route and preserving battery matter more than replicating a phone on your wrist.
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Best Android smartwatch alternative: Samsung Galaxy Watch Ultra
Battery figures need configuration context
TechRadar reports up to 100 hours between charges and describes the Galaxy Watch Ultra as the longest-lasting Galaxy watch it had tested (TechRadar, 2026). Android Central lists 72 hours of battery and 13–16 hours of GPS for a Galaxy Watch Ultra configuration (2026). Those figures are not contradictory: display behavior, connectivity, health monitoring, GPS settings and the exact model or software configuration can change endurance markedly.
Use the 100-hour claim as a best-case planning ceiling and the 72-hour and 13–16-hour figures as a reminder to budget conservatively for an active configuration. A long event that requires continuous GPS may need a charging plan even though ordinary watch use can span several days.
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Health and safety sensors
Samsung’s specification page lists dual-band GPS, 10ATM water resistance, electrocardiogram (ECG), blood-pressure measurement, bioelectrical-impedance analysis, continuous blood-oxygen (SpO2) monitoring, skin-temperature sensing and sleep-apnea tracking. Availability of some health functions depends on country, regulatory clearance, phone pairing and software, so verify the features for your market before buying.
Smart features and compromises
The Galaxy Watch Ultra retains Samsung’s flagship health, fitness and smartwatch feature set, making it the strongest choice here for Android users who want notifications, apps and communication alongside workout tracking. Its compromise is endurance under GPS and connected use: the battery advantage over smaller smartwatches does not turn it into a multi-week expedition watch.
Best iPhone training alternative: Garmin Venu X1
Training-first value
TechRadar says the Venu X1 can last up to nine days with its always-on display turned off and adds maps, Garmin Coach and Training Readiness (TechRadar, 2026). Those tools suit an iPhone owner who wants planned workouts, progression and recovery context without charging every day or two.
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Garmin’s approach is different from a phone-like smartwatch. The value is in workout structure, route awareness and readiness feedback that can guide the next session. Disable always-on display if maximizing the nine-day figure is more important than seeing the time continuously.
What the evidence does not establish
The available material does not contain a controlled, head-to-head heart-rate or GPS accuracy test against the Huawei watch. Choose the Venu X1 for its training ecosystem and endurance profile, not on the assumption that one brand is universally more accurate.
Compatibility considerations
The Venu X1 is the most natural option in this shortlist for iPhone owners seeking a fitness watch rather than an Apple Watch replacement. Check which notifications, music controls, payments and other phone-dependent functions are supported on your specific iPhone and in your country before purchase.
Best value-focused running option: Amazfit Cheetah 2 Pro
Separate everyday and GPS endurance
Android Central reports up to 17 days for the Cheetah 2 Pro in watch use and up to 29 hours with continuous GPS (2026). The 17-day figure is the attractive headline for ordinary wear; the 29-hour figure is the number to use when planning long runs, races or navigation-heavy weekends.
Who should buy it
- Runners who want a long interval between ordinary charges.
- Athletes whose longest GPS sessions fit comfortably inside a 29-hour recording window.
- Buyers who prefer a running-focused device over a large smartwatch-app ecosystem.
When to choose Suunto instead
If your events can exceed 29 hours, or if multi-band GPS is a central requirement, the Race 3S has the stronger published endurance case with up to 38 hours of multi-band tracking. The Cheetah 2 Pro remains compelling when 29 hours is sufficient and minimizing charging is the priority during everyday use.
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How to compare battery claims fairly
Watch mode is not workout mode
“Up to” watch-mode numbers generally assume limited GPS, conservative display settings and a particular notification or health-monitoring pattern. They answer, “How long can the watch show time and handle light activity?” They do not answer, “How long can it record a route with the screen bright and sensors active?”
Continuous GPS is the event-planning number
For races and long hikes, compare the continuous-GPS figure first. On the supplied figures, Suunto’s 38 hours exceeds Amazfit’s 29 hours, while the Galaxy Watch Ultra’s cited 13–16-hour GPS result is shorter despite its 72- to 100-hour general battery claims. Huawei’s own 51-hour trail-running rating is unusually high in this comparison.
Real-world settings can reduce endurance
Always-on display, high brightness, frequent notifications, LTE or intensive phone connectivity, navigation, music playback and continuous health sensing all consume power. A reviewer testing the Race 3S with high brightness, always-on display and daily GPS obtained five to six days, rather than the 12-day watch-mode claim. Use that kind of test as a more realistic reference when your routine resembles it.
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Structured training and readiness
The Venu X1 is the clearest choice for a formal coaching workflow because the cited feature set includes Garmin Coach and Training Readiness. The GT 7 Pro provides running power, running dynamics and a Physical Readiness Score after three days and nights of continuous wear. The available data does not list equivalent coaching or readiness features for the Race 3S or Cheetah 2 Pro, so do not assume that similar-sounding metrics work the same way across brands.
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Maps and navigation
Huawei lists offline maps, Suunto’s case is built around long multi-band GPS sessions, and Garmin’s Venu X1 includes maps. Those are useful distinctions for phone-free routes. The supplied specifications do not detail map coverage, update policy or turn-by-turn behavior for each model; confirm the region and route format you use before relying on a watch for remote navigation.
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Health sensors
The Galaxy Watch Ultra has the broadest explicitly listed sensor set in the supplied material: ECG, blood pressure, bioelectrical impedance, continuous SpO2, skin temperature and sleep-apnea tracking, in addition to dual-band GPS and 10ATM resistance. Huawei lists heart-rate, HRV, sleep and stress analysis. The other alternatives may offer additional measurements, but they are not established by the cited specifications here.
Medical-style features are not interchangeable with clinical diagnosis. Regional approval and phone requirements can limit access, particularly for ECG, blood pressure and sleep-apnea functions.
Smartphone ecosystem and daily use
Android users
Pick the Galaxy Watch Ultra when calls, notifications, apps and Samsung’s health platform are central to your purchase. Pick Suunto or Amazfit when workout recording and battery are more important than a phone-like interface. The choice is less about a single “best” watch and more about how much smartwatch behavior you expect between workouts.
iPhone users
The Venu X1 is the strongest fit in this shortlist for iPhone owners who want structured training and longer endurance than a typical one- or two-day smartwatch cycle. Check the exact iOS functions you need, because third-party watches can have different limits for replies, payments, music and calls.
Phone-free outdoor use
Before a long route, download maps where supported, pair sensors, update satellite data and start with a full charge. A watch can have excellent battery specifications yet fail your trip if the route format, map region or phone compatibility is wrong.
Which watch should you buy?
- Choose Suunto Race 3S if your defining requirement is the longest practical multi-band GPS session. Its published 38-hour figure and the reviewer’s five-to-six-day demanding-use result make it the endurance specialist.
- Choose Samsung Galaxy Watch Ultra if you use Android and want the richest combination of smartwatch functions and health sensors. Plan around the lower GPS figures rather than the 100-hour headline when recording long activities.
- Choose Garmin Venu X1 if you use an iPhone and want coaching, maps and Training Readiness with up to nine days in a display-off configuration.
- Choose Amazfit Cheetah 2 Pro if you are a runner who values up to 17 days of ordinary use and 29 hours of continuous GPS, and your events fit inside that GPS limit.
- Keep the Huawei Watch GT 7 Pro if its 51-hour trail-running rating, offline maps, 110-plus workout modes or Physical Readiness Score already meet your needs. Replacing it only makes sense when a specific ecosystem, training or sensor requirement is more important than matching its battery profile.
Setup checklist for maximizing battery and tracking
- Identify your real workload. Write down your longest GPS activity, whether you use an always-on display, and how often you need maps. Compare that workload with the continuous-GPS column, not the watch-mode headline.
- Configure the display. If endurance is the priority, disable always-on display or use a lower brightness profile. The Venu X1’s nine-day rating specifically assumes always-on display is off.
- Prepare routes before leaving. Download offline maps where available, sync the route and confirm that the destination region is supported. Do not assume a map feature covers every country or trail.
- Test sensors and phone pairing. Complete a short workout with your heart-rate strap or other accessories, notifications and navigation enabled. This exposes compatibility problems before an event.
- Charge for the actual event. Start with a full battery and include a charging stop or battery pack for activities approaching the published GPS limit. Published “up to” values are ceilings, not guarantees.
- Review health-feature availability. Confirm regional support for ECG, blood pressure, sleep-apnea and similar functions, and follow any required phone or account setup.
Accuracy, durability and availability caveats
No controlled cross-brand study in the supplied material establishes a universal heart-rate or GPS winner. The Suunto review comment supports confidence in its endurance for ultramarathon use, but it should not be converted into a blanket accuracy claim. Compare watches using the metrics and routes that matter to you, and validate important training data against a known reference.
Water-resistance ratings and health sensors can vary by model and market. Samsung lists 10ATM resistance for the Galaxy Watch Ultra; Huawei lists diving support to 40 metres. These are not identical test descriptions, so follow each manufacturer’s limits rather than treating the numbers as interchangeable diving certifications.
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