Best Smartwatch 2026 — Apple Watch Series 12 vs Galaxy Watch 9 vs Garmin Venu 4
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Last updated: September 19, 2026 • 5 watches compared • all available on Amazon US
- Apple Watch Series 12 — best with an iPhone, from $399 (4.8/5)
- Samsung Galaxy Watch 9 — best with Android, from $379.99 (4.6/5)
- Garmin Venu 4 — up to 12 days of battery, any phone (4.7/5)
See Apple Watch Series 12 on Amazon →
Compare all five »The best smartwatch is the one that works with your phone. Apple Watch only pairs with an iPhone, and Samsung reserves some health features for Galaxy phones, so the first decision is made for you. The second is battery: charge every night for the richest apps, or every one to two weeks with Garmin or Amazfit.
This guide was updated after the September 2026 launches. The Apple Watch Series 12 replaced the Series 11 on September 18, and the Galaxy Watch 9 replaced the Watch 8 on August 7. Every watch below is sold on Amazon US today.
Quick Comparison
| Watch | Best for | Battery | Price | Score | |
|---|---|---|---|---|---|
| Apple Watch Series 12 | iPhone owners Best Pick | Up to 24 hrs | From $399 | ★★★★☆ 4.8 | Check price → |
| Samsung Galaxy Watch 9 | Android owners Runner-up | Up to 30 hrs | From $379.99 | ★★★★½ 4.6 | Check price → |
| Garmin Venu 4 | Battery & fitness | Up to 12 days | ~$499.99 | ★★★★½ 4.7 | Check price → |
| Apple Watch SE 3 | iPhone on a budget | Up to 18 hrs | From $249 | ★★★★½ 4.4 | Check price → |
| Amazfit Active 3 Premium | Budget, any phone Best Budget | Up to 12 days | ~$170 | ★★★★½ 4.3 | Check price → |
Prices are launch or typical US street prices and change often; the buttons show today's price.
1. Apple Watch Series 12 — Best for iPhone Owners
The Series 12 is the first Apple Watch in three generations with a new chip, the S11. The bigger change is the health sensing: heart rate is now sampled every five seconds (Apple says 60 times more often than before) and HRV every five minutes, which feeds a new Readiness score built from activity, vitals and sleep. Battery life stays at up to 24 hours, but workout battery rises to up to 10 hours. It is the watch to buy if you own an iPhone and want the deepest app, payment and health integration.
- Heart rate every 5 seconds and HRV every 5 minutes feed the new Readiness score
- New S11 chip — first chip upgrade since the Series 9
- Up to 10 hours of workout tracking, 25% more than the Series 11
- Audio Intelligence can rewind and transcribe the last 15 seconds of speech
- iPhone only — will not pair with Android
- Everyday battery unchanged at up to 24 hours — still a nightly charge
- At launch, the Amazon listing bundles two years of AppleCare+, raising the price above $399
See Apple Watch Series 12 on Amazon →
→ Read our Apple Watch Series 11 review (same design and battery; often discounted now)
2. Samsung Galaxy Watch 9 — Best for Android
Samsung launched the Galaxy Watch 9 on August 7, 2026. The 40mm model gets a 390mAh battery, 20% more than the Watch 8, and Samsung rates both sizes at up to 30 hours with the always-on display. The software adds a Vitals dashboard, a Trail Run mode and an energy score. It runs Wear OS with Gemini, so Google apps work as on any Android watch — but the ECG and blood-pressure apps need a Samsung Galaxy phone.
- Up to 30 hours with always-on display — longer than any Apple Watch here
- 40mm battery grew 20% (325 to 390mAh) over the Watch 8
- New Vitals dashboard, energy score and Trail Run mode
- Wear OS with Gemini and the full Google Play app store
- ECG and blood-pressure monitoring require a Samsung Galaxy phone
- $30 more than the Watch 8 at launch ($379.99 / $409)
- Not compatible with iPhone
See Galaxy Watch 9 on Amazon → See at Samsung →
→ Read our Galaxy Watch 8 review (the previous model, now cheaper)
3. Garmin Venu 4 — Best Battery Life and Fitness Tracking
The Venu 4 is for people who want smartwatch looks without a nightly charge. Garmin rates the 45mm model at up to 12 days in smartwatch mode (10 days for the 41mm). It carries the full Garmin health suite — ECG, HRV, skin temperature, blood oxygen and sleep tracking — in a metal case with a built-in LED flashlight, and it works with both iPhone and Android. It launched at $549.99 and now typically sells for $499.99.
- Up to 12 days of battery (45mm) — weekly charging instead of nightly
- On-demand ECG plus HRV, skin temperature and SpO2
- Built-in LED flashlight and full-metal case
- Works with iPhone and Android alike
- Most expensive watch on this list
- Only two physical buttons — more touchscreen use with sweaty fingers or gloves
- Far smaller third-party app selection than Apple or Wear OS
4. Apple Watch SE 3 — Best Apple Watch on a Budget
The SE 3 costs $150 less than the Series 12 and runs on the S10 chip, the same silicon as the Series 10 and 11, so it should receive watchOS updates for years. It is the first SE with an always-on display. What you give up are the advanced health sensors: no ECG, no blood oxygen and no hypertension alerts. Battery is rated at up to 18 hours, or about 32 hours in Low Power Mode.
- From $249 (40mm) — the cheapest current Apple Watch
- S10 chip, the same as the Series 10 and Series 11
- First SE with an always-on display
- No ECG, blood-oxygen or hypertension alerts
- Up to 18 hours of battery — the shortest on this list
- Older case design with thicker bezels
5. Amazfit Active 3 Premium — Best Budget Smartwatch for Any Phone
At around $170, the Active 3 Premium is the cheapest watch here and among the cheapest with offline maps, including turn-by-turn navigation and automatic rerouting. Amazfit rates it at up to 12 days with typical use and 7 with heavy use. The display is covered by sapphire glass, and it pairs with both iPhone and Android. The trade-offs are GPS precision — it lacks the dual-frequency GNSS of Amazfit's pricier watches — and a small app store.
- Around $170 — less than half the price of an Apple Watch Series 12
- Offline maps with turn-by-turn navigation and rerouting
- Up to 12 days of battery with typical use
- Sapphire glass and 4GB of storage
- No dual-frequency GPS — less precise among tall buildings and trees
- GPS battery in independent testing closer to 16 hours than the claimed 24
- Few third-party apps compared with Apple or Wear OS
How to Choose a Smartwatch
Start with your phone
An Apple Watch needs an iPhone. A Galaxy Watch works with any Android phone, but its ECG and blood-pressure features need a Samsung Galaxy phone. Garmin and Amazfit work equally well with iPhone and Android, which makes them the safe choice for a household with both.
Decide how often you will charge
| Watch | Rated battery | In practice |
|---|---|---|
| Apple Watch SE 3 | Up to 18 hours | Charge every night |
| Apple Watch Series 12 | Up to 24 hours | Charge every night |
| Galaxy Watch 9 | Up to 30 hours (always-on) | Charge every night or two |
| Amazfit Active 3 Premium | Up to 12 days (typical) | Charge about weekly |
| Garmin Venu 4 (45mm) | Up to 12 days | Charge about weekly |
If you want sleep tracking, look hard at the bottom two rows: a watch that must charge every night has to charge at some other time of day to stay on your wrist overnight.
Health sensors: what you actually get
Heart rate, sleep and workout tracking are standard on all five. ECG is on the Series 12, the Galaxy Watch 9 (with a Galaxy phone) and the Venu 4. The Apple Watch SE 3 is the one that leaves it out, together with blood oxygen and hypertension alerts — that is the main reason it costs $150 less.
Last year's model can be the better buy
The Series 12 keeps the Series 11's design and 24-hour battery, and the Galaxy Watch 9 is an incremental update over the Watch 8. With the new models out, the previous ones are often discounted — worth checking if the newest sensors do not matter to you.
Why the Google Pixel Watch is missing
The Pixel Watch 5 went on sale on August 20, 2026 from $399, but it is not sold on Amazon US, and the Pixel Watch 4 is currently unavailable there. We only recommend watches you can buy through this page. If you use a Pixel phone, the Galaxy Watch 9 runs the same Wear OS and Gemini assistant.
Our Verdict
Own an iPhone? Buy the Apple Watch Series 12, or the Apple Watch SE 3 if you do not need ECG and want to save $150. Own an Android phone? The Samsung Galaxy Watch 9 is the most complete Wear OS watch on Amazon, and the best match for a Galaxy phone. Hate charging? The Garmin Venu 4 lasts up to 12 days with a full health suite, and the Amazfit Active 3 Premium gets you the same battery life and offline maps for about a third of the price.
See Apple Watch Series 12 on Amazon → See Galaxy Watch 9 on Amazon →
Frequently Asked Questions
What is the best smartwatch in 2026?
With an iPhone, the Apple Watch Series 12 ($399). With an Android phone, the Samsung Galaxy Watch 9 (from $379.99). If battery life matters most, the Garmin Venu 4 lasts up to 12 days and works with both.
Is the Apple Watch Series 12 worth it over the Series 11?
For a first Apple Watch, yes — it costs the same $399 and adds the S11 chip, heart-rate sampling every five seconds and the Readiness score. If you already own a Series 11, battery life is unchanged at up to 24 hours, so the upgrade is small.
Which smartwatch has the longest battery life?
The Garmin Venu 4 (up to 12 days, 45mm) and the Amazfit Active 3 Premium (up to 12 days with typical use). The Galaxy Watch 9 manages up to 30 hours with always-on display, the Series 12 up to 24 hours and the SE 3 up to 18 hours.
Do I need GPS in a smartwatch?
For running and cycling, yes — built-in GPS records distance and pace without your phone. All five watches here have it; the Amazfit's is single-frequency, so it is less precise in cities and forests.