Amazfit Balance 2 VS OnePlus Watch 3 43mm

The most immediately noticeable design split is size and wearability. The Amazfit Balance 2 sports a larger 1.5″ display on a 47.4 × 47.4 mm case weighing 43 g, while the OnePlus Watch 3 43mm is meaningfully more compact at 1.32″, 43.2 × 43.2 mm, and just 37.8 g. That 5+ gram difference and smaller footprint make the OnePlus a noticeably lighter presence on the wrist, which matters during sleep tracking or prolonged wear. The Balance 2's larger panel, however, offers more screen real estate for glanceable data and easier touch interactions — a genuine trade-off rather than a clear-cut win.

Display sharpness is close but favors the OnePlus: its 352 ppi slightly outpaces the Balance 2's 323 ppi, though both use OLED/AMOLED panels with always-on capability, so real-world visual quality will be excellent on either. Where the Balance 2 pulls decisively ahead is durability. It carries a sapphire glass display — one of the hardest materials used in watchmaking, highly resistant to everyday scratches — while the OnePlus Watch 3 uses no sapphire glass. Combined with a stronger water resistance rating of 10 ATM / IP68 versus the OnePlus's 5 ATM / IP67, the Balance 2 is built to handle more demanding environments, from swimming laps to accidental drops.

Overall, the OnePlus Watch 3 43mm has the edge for users who prioritize a sleek, lightweight form factor, while the Amazfit Balance 2 wins on durability and screen size — making it the stronger choice for active or outdoor use where scratch resistance and deeper water protection genuinely matter.

Both watches share a solid common foundation — heart rate monitor, blood oxygen tracking, GPS, accelerometer, gyroscope, and compass are all present on each device. For most fitness and navigation use cases, this overlap means neither watch leaves users short on essential health and movement data.

The meaningful divergence comes down to two sensors the Amazfit Balance 2 carries that the OnePlus Watch 3 does not: a temperature sensor and a barometer. A wrist-based temperature sensor enables continuous body temperature monitoring, useful for detecting illness trends or menstrual cycle tracking. The barometer is arguably even more impactful for active users — it measures real-time atmospheric pressure to deliver accurate altitude readings and weather change alerts, something GPS alone cannot reliably provide. For hikers, trail runners, or cyclists, the absence of a barometer on the OnePlus Watch 3 is a tangible gap.

The Amazfit Balance 2 holds a clear edge in this category. Its expanded sensor suite makes it the more capable choice for health-conscious users and outdoor athletes, while the OnePlus Watch 3 covers everyday fitness tracking needs but falls short for more demanding or health-focused applications.

For everyday fitness tracking, these two watches are virtually identical — both cover sleep tracking with reports, step counting, distance, pace, elevation, route tracking, automatic activity detection, calorie intake, and exercise tagging. Users who stick to running, walking, cycling, or gym workouts will find either watch equally capable on paper.

The separation emerges when the activity scope broadens. The Amazfit Balance 2 supports multi-sport mode, which allows seamless switching between different activities within a single session — valuable for triathletes or anyone combining disciplines in one workout. Beyond that, it is explicitly designed for diving and golf, two highly specialized use cases. Golf mode typically includes course maps, shot tracking, and stroke counting, while dive support goes well beyond standard waterproofing to track depth and dive metrics. The OnePlus Watch 3 supports none of these three features.

For general users, the gap is negligible. But for anyone who plays golf, dives, or trains across multiple disciplines, the Amazfit Balance 2 is the clear winner in this category — its activity tracking breadth is meaningfully wider, making it the more versatile sports companion of the two.

At the core, both watches share Bluetooth 5.2 and NFC — the former ensuring stable, energy-efficient pairing with a smartphone, the latter enabling contactless payments. Neither offers a cellular module, so both require a paired phone for full functionality. For most users, this is the expected baseline in this product category.

Two differences stand out, however. First, iOS compatibility: the Amazfit Balance 2 works with both Android and iPhone, while the OnePlus Watch 3 is Android-only. This is a hard wall — iPhone users simply cannot use the OnePlus Watch 3, making it a non-starter for a significant portion of the market. Second, the Balance 2 supports Wi-Fi, which allows it to sync data, download updates, and potentially stream music independently of a Bluetooth connection when on a known network. The OnePlus Watch 3 lacks Wi-Fi entirely, making it more dependent on an active phone connection for these tasks.

The Amazfit Balance 2 wins this category without much contest. Its broader platform compatibility removes a major purchase barrier, and Wi-Fi support adds a layer of connectivity independence that the OnePlus Watch 3 cannot match. The OnePlus is a capable option, but strictly for Android users who do not need wireless syncing beyond Bluetooth.

The battery gap between these two watches is dramatic in normal use. The Amazfit Balance 2 is rated at 21 days on a 658 mAh cell, compared to just 2.5 days for the OnePlus Watch 3 on a 354 mAh battery. That near-9x difference in daily runtime is not a minor convenience factor — it fundamentally changes how each watch fits into a lifestyle. The Balance 2 can be worn through multi-week trips without access to a charger, while the OnePlus demands charging roughly every other day, much like a smartwatch with a richer but more power-hungry OS experience.

Training mode tells a similar story: the Balance 2 sustains 240 hours of active workout tracking versus 36 hours for the OnePlus — a significant advantage for ultra-endurance athletes or anyone using GPS-heavy activities frequently. The one reversal comes in power save mode, where the OnePlus Watch 3 actually stretches to 168 hours compared to the Balance 2's 67 hours. This suggests the OnePlus can aggressively throttle its functions when needed, but this mode typically disables most smartwatch features, limiting its practical usefulness.

Neither watch offers wireless charging, putting them on equal footing there. Overall, the Amazfit Balance 2 has a commanding advantage in this category — its battery longevity in both standard and training modes makes it the far more self-sufficient option for users who prioritize going days or weeks between charges.

Across this feature set, the two watches are remarkably well-matched. Health intelligence staples — HRV tracking, VO2 max, resting heart rate, readiness level, and heart rate alerts — are identical on both. So are communication and interaction features: call answering, call control, notifications, voice commands, silent and vibrating alerts, stopwatch, and camera remote control all appear on each device. Even internal storage is identical at 32GB on both. For the vast majority of everyday smartwatch use cases, these two are functionally equivalent.

The sole differentiator in this entire category is faster GPS acquisition, which the Amazfit Balance 2 supports and the OnePlus Watch 3 does not. In practice, quicker GPS lock means less standing around waiting for a signal before a run or ride begins — a small but genuinely appreciated quality-of-life advantage for users who train outdoors regularly and want to start moving immediately.

This is the most evenly matched category in the comparison so far. The Amazfit Balance 2 technically edges ahead thanks to faster GPS acquisition, but the margin is narrow and only meaningfully relevant to outdoor athletes. For users who do not rely heavily on GPS workouts, this group is effectively a tie.

This is a clean sweep for parity. Every single spec in this category — activity reports, inactivity alerts, calorie burn tracking, goal setting, achievements, water intake tracking, and weight tracking — is identical between the Amazfit Balance 2 and the OnePlus Watch 3. Both also lack a barcode scanner in their companion apps, so neither has an edge in nutrition logging convenience either.

The shared feature set reflects a well-rounded wellness ecosystem on both platforms. Goal setting and achievements encourage behavioral consistency, inactivity alerts address sedentary habits, and the combination of calorie, water, and weight tracking gives users a reasonably complete picture of their daily health without needing a separate app for each metric.

Based strictly on the provided data, this category is a complete tie. There is no differentiator to analyze — both watches deliver an identical app and software experience across every tracked spec, and a purchase decision in this category offers no grounds to favor one over the other.

The miscellaneous specs for these two watches are identical across every data point provided. Both display a battery level indicator, neither supports Windows or Mac OS X desktop pairing, neither offers an external memory slot, and neither includes a 3.5mm audio jack — all of which are standard limitations for modern smartwatches in this segment.

The absence of desktop OS compatibility is worth noting as context: both watches are designed to function exclusively within a mobile ecosystem, meaning PC or Mac users cannot manage their device natively through a desktop application based on these specs. The lack of expandable storage is equally typical, and with 32GB of internal storage confirmed in the Features category, neither watch is likely to leave users feeling constrained.

This category is a complete tie. Every listed spec lands identically for the Amazfit Balance 2 and the OnePlus Watch 3, and none of the shared limitations represent a meaningful disadvantage for either product relative to the other. This group offers no basis for differentiation in a purchase decision.