Smartwatch
6 products in this category · newest first. Full spec sheets, side by side.
Smartwatch
6 products in this category · newest first
| Model | Processor (CPU) | Memory (RAM) | Storage | Display | Battery | Weight | Connectivity | Operating System | Dimensions |
|---|---|---|---|---|---|---|---|---|---|
| Samsung Galaxy Watch Ultra 2 Samsung | Qualcomm Snapdragon Wear Elite (flagship Wear OS platform with dedicated AI NPU, replacing the Exynos W1000) | 2GB (fixed, non-upgradable) | 64GB Internal (fixed, non-expandable) | 1.52" (38.5mm) 498x498 Super AMOLED, Always-On Display, Sapphire Crystal, up to 5,000 nits peak brightness | 800mAh (35% larger than the 590mAh Galaxy Watch Ultra), up to 60 hours with Always-On Display (48-50 hours typical use), up to 20 hours GPS / 16 hours GPX navigation, 10W WPC-based Fast Charging: 40% in 30 minutes, full charge ~1h45m | 61.5g (2.17 oz) without band | Bluetooth 6.0 LE, Wi-Fi 6 (2.4GHz + 5GHz) | Wear OS 7 with One UI 9 Watch (5 major OS upgrades + 5 years of security updates) | 47.4 x 47.1 x 10.7 mm |
| Garmin Fenix 8 (47mm AMOLED) Garmin | Garmin proprietary SoC (not disclosed) | Not disclosed by Garmin | 32GB Internal | 1.4" 454x454 AMOLED, Always-On Display, Sapphire Crystal, up to 2000 nits peak brightness | Built-in rechargeable lithium-ion, up to 16 days Smartwatch mode, up to 47 hours GPS mode, up to 10 days with always-on display | 95g (case only), ~110g (with silicone band) | Bluetooth 5.3, Wi-Fi 4 (802.11 b/g/n), ANT+ | Garmin Proprietary OS | 47 x 47 x 13.8 mm |
| Apple Watch Ultra 3 Apple | Apple S10 chip with 64-bit dual-core processor, 4-core Neural Engine | N/A (Apple does not disclose RAM capacity) | 64GB | 49mm 422x514 Always-On Retina LTPO3 OLED, wide-angle OLEDs, flat sapphire crystal, up to 3000 nits peak brightness, 1 nit minimum | Built-in rechargeable lithium-ion, up to 42 hours normal use, up to 72 hours in Low Power Mode, fast-charge capable (up to 80% in about 45 minutes) | 61.6g (natural titanium) / 61.8g (black titanium) | Bluetooth 5.3, Wi-Fi 4 (802.11n) | watchOS 27 | 49 x 44 x 12 mm |
| Google Pixel Watch 4 Google | Qualcomm Snapdragon W5 Gen 2 (4nm, 4x ARM Cortex A53 @1.7GHz, ARM Cortex M55 co-processor) | 2GB LPDDR4X SDRAM | 32GB eMMC 5.1 | 1.4" 456x456 Actua 360 AMOLED, domed Corning Gorilla Glass, up to 3000 nits peak brightness, Always-On Display (45mm) / 1.2" 408x408 Actua 360 AMOLED, domed Corning Gorilla Glass, up to 3000 nits peak brightness, Always-On Display (41mm) | 455mAh (45mm) / 325mAh (41mm) built-in rechargeable lithium-ion, up to 40 hours normal use (45mm) / up to 30 hours normal use (41mm), up to 48 hours in Battery Saver mode, fast-charge: 50% in 15 min, 80% in 25 min, 100% in 45 min | 36.7g (45mm) / 31g (41mm) without band | Bluetooth 6.0, Wi-Fi 6 (802.11 a/b/g/n/ac/ax 2.4GHz + 5GHz) | Wear OS 6.0 with Pixel UI | 45 x 45 x 12.3 mm (45mm) / 41 x 41 x 12.3 mm (41mm) |
| OnePlus Watch 3 OnePlus | Qualcomm Snapdragon W5 Gen 1 (4nm, quad-core Cortex-A53, up to 1.7GHz) + BES 2800 co-processor (Dual-Engine Architecture) | 2GB LPDDR4X | 32GB eMMC | 1.5" 466x466 LTPO AMOLED, up to 2200 nits peak brightness, sapphire crystal, Always-On Display | 648mAh, up to 5 days in Smart Mode, up to 3 days heavy use, up to 12 days in Power Saver Mode, 10-minute charge for 1-day use (OnePlus Silicon NanoStack Battery) | 76g (without strap), ~94g (with strap) | Bluetooth 5.2, Wi-Fi 5 (802.11 a/b/g/n/ac 2.4GHz+5GHz) | Wear OS 5 (based on Android 14) with OnePlus Watch software overlay | 46.6 x 46.6 x 12.1 mm (without heart rate sensor bump) |
| Samsung Galaxy Watch8 Samsung | Exynos W1000 (3nm, 5-core CPU) | 2GB | 16GB Internal | 1.5" 480x480 Super AMOLED, Always-On Display, Sapphire Crystal, up to 2000 nits peak brightness | Built-in rechargeable lithium-ion, 425mAh (44mm) / 300mAh (40mm), up to 40 hours normal use, up to 65 hours in Power Saving mode, fast-charge capable (WPC-based wireless charging) | 33.1g (44mm) / 28.8g (40mm) without band | Bluetooth 5.3, Wi-Fi 5 (802.11 a/b/g/n/ac) | Wear OS 5 with One UI 6 Watch | 44.4 x 43.3 x 9.7 mm (44mm) / 40.4 x 39.3 x 9.7 mm (40mm) |
Smartwatches have evolved from a luxury accessory into an essential health tracking tool, personal assistant, and connectivity device on the wrists of millions. With the ability to measure heart rate, track sleep, provide GPS for sports, reply to messages, and even make calls, today's smartwatches can replace your phone in many situations.
However, with countless options from the Apple Watch, Samsung Galaxy Watch, Garmin, Fitbit, and Chinese brands like Xiaomi and Huawei, choosing the right smartwatch can be overwhelming. This guide will help you make the right decision.
What to Know Before Buying a Smartwatch
The four most important factors: ecosystem (iOS vs Android), health and fitness features, battery life, and design.
Ecosystem is the deciding factor. The Apple Watch only works with the iPhone — no Android compatibility. The Samsung Galaxy Watch works best with Samsung Galaxy phones but also works with other Android devices. Garmin, Xiaomi, Huawei, and Fitbit are compatible with both iOS and Android but lose some features on iOS. Wear OS (Google) works with Android and has basic support on iOS.
Health features: heart rate monitoring, SpO2, ECG (electrocardiogram), sleep tracking, stress measurement, skin temperature, and the latest — non-invasive blood glucose monitoring. If you care about overall health, the Apple Watch Series 9/10 and Samsung Galaxy Watch 6/7 are the best. If you're an athlete, Garmin is the top choice.
Battery life: Apple Watch needs daily charging (18-36h). Samsung Galaxy Watch lasts 1-2 days. Garmin can last 7-14 days (Fenix up to 28 days). Xiaomi and Huawei last 7-14 days. If you don't want to charge daily, choose Garmin or Huawei.
Key Specs to Consider
| Spec | Description | Recommendation |
|---|---|---|
| OS | WatchOS, Wear OS, Tizen, HarmonyOS, proprietary | WatchOS (iPhone), Wear OS (Android) |
| Display | AMOLED, LCD, always-on | AMOLED always-on is best |
| Health Sensors | Heart rate, SpO2, ECG, temperature | The more the better |
| GPS | Standard, multi-band | GPS+L5 for high accuracy |
| Water Resistance | 5ATM, IP68 | 5ATM for swimming |
| Battery Life | 1-28 days | 2-7 days is ideal |
| Connectivity | Bluetooth, WiFi, LTE (cellular) | LTE if you want to go phone-free |
| Storage | 8-64GB (for music, apps) | 16GB+ is sufficient |
Types of Smartwatches
All-Rounder Smartwatches (Apple Watch, Samsung Galaxy Watch)
Full combination of smart and health features. Reply to messages, make calls, rich app ecosystem, comprehensive health tracking. Suitable for most people. Drawback: weak battery (1-2 days).
Sports-Focused Watches (Garmin, Suunto, Polar)
Focused on sports, high GPS accuracy, long battery life, high durability. Suitable for athletes, runners, cyclists, swimmers, climbers. Smart features are more limited (basic message replies, no extensive app installation).
Fitness Trackers / Smart Bands (Xiaomi Mi Band, Fitbit Inspire, Huawei Band)
Cheap, lightweight, long battery (14 days+), basic health tracking. Few smart features. Suitable for those who just need step counting and basic sleep tracking.
Classic-Style Smartwatches (Withings, Fossil, Skagen)
Design resembles traditional watches, round face, traditional hands combined with smart features (health tracking, notifications). Suitable for those who love classic style and don't like large screens.
Budget Tiers
| Tier | Price | Features | Examples |
|---|---|---|---|
| Basic | 300K - 1M VND | Fitness tracker, small screen, 14-day battery, steps + heart rate | Xiaomi Mi Band 9, Huawei Band 9, Honor Band 9 |
| Mid-range | 1 - 4M VND | Basic smartwatch, AMOLED, GPS, SpO2, 5-7 day battery | Xiaomi Watch S3, Huawei Watch GT 4, Amazfit Balance |
| Premium | 4 - 10M VND | Full smartwatch, ECG, LTE, Wear OS/WatchOS, many apps | Apple Watch SE, Samsung Galaxy Watch 6, Garmin Venu 3 |
| Flagship | 10M+ VND | Peak technology, premium materials (titanium, sapphire) | Apple Watch Ultra 2, Samsung Galaxy Watch Ultra, Garmin Fenix 8 |
Top Brands
| Brand | Known For | Tier |
|---|---|---|
| Apple | Apple Watch — best-selling smartwatch, strongest ecosystem | Premium - Flagship |
| Samsung | Galaxy Watch — powerful Wear OS, comprehensive health features | Premium - Flagship |
| Garmin | Best sports watch, long battery, accurate GPS | Mid-range - Flagship |
| Xiaomi | Mi Band — best-selling budget fitness tracker globally | Basic - Mid-range |
| Huawei | Watch GT series — long battery, beautiful design, good health tracking | Mid-range - Premium |
| Fitbit (Google) | Fitness tracking, community, Google Fit integration | Mid-range - Premium |
Comparison with Alternatives
Smartwatch vs Analog Watch
Analog watches don't need charging, last forever, and hold fashion and investment value. Smartwatches need charging, become obsolete after 2-3 years, but offer health tracking, notifications, and GPS. If you only need to tell time, an analog watch is sufficient. If you want health tracking and connectivity, a smartwatch is the modern choice.
Apple Watch vs Galaxy Watch vs Garmin
Apple Watch is best for iPhone users — deep integration, beautiful display, rich app ecosystem. Galaxy Watch is best for Samsung/Android users — Wear OS, Google Assistant, Samsung Health. Garmin is best for athletes — long battery, accurate GPS, detailed sports metrics. Each has its strengths — none is universally "best."
Smartwatch vs Fitness Tracker
Fitness trackers (Mi Band, Fitbit Inspire) are 2-5x cheaper, have longer battery life, and are lighter. However, they lack built-in GPS (use phone GPS), have small screens, can't reply to messages, and can't install apps. If you only need step counting and sleep tracking, a fitness tracker is enough.
Common Mistakes When Buying
- Buying an Apple Watch while using Android — The Apple Watch doesn't work with Android. You won't be able to connect it at all.
- Buying an overpriced smartwatch for basic needs — If you only need step counting and time, a 500K VND Xiaomi Mi Band is enough. Don't buy an Apple Watch Ultra 2 if you don't climb mountains.
- Not checking iPhone compatibility — Some Android smartwatches (Xiaomi Watch, Huawei Watch) lose message reply functionality when connected to an iPhone.
- Ignoring battery life — The Apple Watch and Samsung Galaxy Watch need daily charging. If you don't want to charge frequently, choose Garmin or Huawei Watch GT.
- Buying a smartwatch with unnecessary LTE — LTE requires a separate data plan and drains the battery faster. Only buy it if you really need to run without your phone.
- Forgetting about watch face size — A 46mm Apple Watch Ultra is too big for a small wrist. Try it on before buying.
Conclusion
A smartwatch is an important personal device — choose based on the phone you use first. If you use an iPhone, the Apple Watch Series 9/SE (2-5M VND for SE, 10-12M VND for Series 9) is the undisputed choice. If you use Android, the Samsung Galaxy Watch 6 (5-8M VND) or Garmin Venu 3 (7-10M VND) are excellent. With a budget under 2M VND, the Xiaomi Watch S3 or Huawei Watch GT 4 offer a good experience.
Final advice: don't buy a smartwatch just because it looks good. Determine what you need it for — health tracking, sports, or connectivity — and choose the right product for that need. The right smartwatch will be your daily companion for 3-5 years.
Further reading: DC Rainmaker (sports watch reviews), r/smartwatch, Wareable