Apple Watch Series 6 vs Samsung Galaxy Watch 3
The Verdict
Both smartwatches deliver premium features at the same $399 price point, but with distinct strengths. Apple Watch Series 6 excels with its superior LTPO OLED always-on display (324x394 or 368x448 resolution), lighter aluminum construction (30.5-36.2g), and seamless watchOS 11+ integration for iPhone users. Galaxy Watch 3 counters with exceptional battery longevity,delivering up to 2 days versus Series 6's 18 hours,plus a more durable titanium option and rotatable bezel for navigation. Health features are virtually identical: both offer ECG, blood oxygen, heart rate monitoring, and sleep tracking. Series 6's lighter weight and crisp display make it more comfortable for all-day wear, while Galaxy Watch 3's multi-day battery and rugged MIL-STD certification suit users prioritizing endurance and durability. Choose Series 6 for iOS ecosystem optimization and display quality; select Galaxy Watch 3 if battery life and build durability matter most.
Who Should Buy
Buy the Apple Watch Series 6 if…
- →First Apple Watch with blood oxygen (SpO2) monitoring
- →Always-On display is 2.5x brighter outdoors than Series 5
- →U1 chip enables precise Find My features and car key unlock
Buy the Samsung Galaxy Watch 3 if…
- →Physical rotating bezel provides tactile, satisfying navigation
- →Premium stainless steel build with classic watch aesthetics
- →ECG and SpO2 monitoring were cutting-edge at launch
Category Scores
Pros & Cons
Apple Watch Series 6
Pros
- First Apple Watch with blood oxygen (SpO2) monitoring
- Always-On display is 2.5x brighter outdoors than Series 5
- U1 chip enables precise Find My features and car key unlock
- S6 chip is 20% faster than S5 — noticeably snappier
- Multiple premium case materials including titanium and blue aluminum
Cons
- 18-hour battery still requires daily charging
- SpO2 readings are for wellness only — not medical grade
- No keyboard input — smaller bezels came in Series 7
- Charging speed is slow compared to Series 7+
Samsung Galaxy Watch 3
Pros
- Physical rotating bezel provides tactile, satisfying navigation
- Premium stainless steel build with classic watch aesthetics
- ECG and SpO2 monitoring were cutting-edge at launch
- Fall detection with automatic SOS alerts
- Thinner and lighter than Galaxy Watch (2018)
Cons
- Tizen OS is now discontinued — no new app development
- Battery life of 1.5 days typical requires frequent charging
- Older Exynos 9110 is noticeably slower than W920
- Heavy at 48-54 g — uncomfortable for sleep tracking
Full Specifications
| Spec | Apple Watch Series 6 | Samsung Galaxy Watch 3 |
|---|---|---|
| Software | watchOS 7 (upgradable to watchOS 11+) | Tizen OS 5.5 |
| Body | ||
| Weight | 30.5 g (40mm Al) / 36.2 g (44mm Al) | 48.2 g (41mm) / 53.8 g (45mm) |
| Case material | Aluminum / Stainless Steel / Titanium | Stainless Steel / Titanium |
| Water resistance | WR50 (50m) | 5ATM + IP68, MIL-STD-810G |
| Health & Sensors | ||
| ECG | ||
| SpO₂ | ||
| Skin temperature | ||
| Heart rate | ||
| Sleep tracking | ||
| Battery | ||
| Battery life | Up to 18 hours | Up to 2 days (typical ~1.5 days) |
| Display | ||
| Size | 40mm / 44mm | 41mm / 45mm |
| Type | LTPO OLED Always-On Retina | Super AMOLED |
| Always-on display | ||
| Resolution | 324 x 394 / 368 x 448 | 360 x 360 |
| Processor | ||
| Chipset | Apple S6 SiP | Exynos 9110 |
| Connectivity | ||
| GPS | ||
| NFC | ||
| Wi-Fi | ||
| Cellular | ||
| Bluetooth | 5.0 | 5.0 |
Related Comparisons
This comparison is based on verified manufacturer specifications covering display, performance, camera, battery, and build quality. Scores are generated by analyzing specs across weighted categories on a 10-point scale. Learn more about our methodology.
Explore more in smartwatches, see all Apple products or all Samsung products. View full details for the Apple Watch Series 6 or the Samsung Galaxy Watch 3.
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