Apple Watch SE 3 vs Garmin Vivoactive 6
Both the Apple Watch SE 3 and the Garmin Vivoactive 6 sit in the everyday smartwatch class, and Apple and Garmin are clearly watching each other. On the overall scorecard, the Garmin Vivoactive 6 is ahead: 2 of 4 areas, with battery life doing the heavy lifting. Money matters here as well, since the Garmin Vivoactive 6 started out $51 above the Apple Watch SE 3.
At a glance
- Display Tie
- Health & Fitness Sensors Garmin Vivoactive 6 wins
- Battery Life Garmin Vivoactive 6 wins
- Smart Features & Connectivity Apple Watch SE 3 wins
- Price Apple Watch SE 3 wins
- Health & Fitness Sensors1.7
- Smart Features & Connectivity10.0
- Health & Fitness Sensors3.3
- Smart Features & Connectivity3.6
Spec scores (0 to 10) are calculated from manufacturer specs against other models in the same class. See how the formula works. They are not reviews or user ratings.
Key Differences
-
The Garmin Vivoactive 6 has 1367% more rated battery life
Not a close call. The Garmin Vivoactive 6 lists 11 days and the Apple Watch SE 3 lists 18 h. That’s a substantial gap. Longer battery life means fewer nights on the charger, which also makes sleep tracking easier.
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The Apple Watch SE 3 has a cellular option
Whether it matters depends on your habits, but only one of these two gives you a cellular option: the Apple Watch SE 3. A cellular option lets the watch take calls, receive messages and stream music without your phone nearby.
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The Apple Watch SE 3 has 56 GB more storage
Among all the differences on this page, 64 GB against 8 GB is one of the most meaningful, and it favors the Apple Watch SE 3. If you run or train without your phone, the Apple Watch SE 3’s extra storage is useful.
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The Garmin Vivoactive 6 has blood-oxygen readings
Missing features are easy to overlook when you buy and hard to live without later. The Apple Watch SE 3 skips this one. The Garmin Vivoactive 6 can take blood-oxygen readings; the Apple Watch SE 3 can’t.
Design & Size
- Apple Watch SE 3 44 mm × 0.42 in
- Garmin Vivoactive 6 42 mm × 0.43 in
By the manufacturer’s measurements, the Garmin Vivoactive 6 is the more compact watch, and the Apple Watch SE 3 the larger one.
Design & Durability
| Spec | Apple Watch SE 3 | Garmin Vivoactive 6 |
|---|---|---|
| Case size (largest) | 44 mm | 42 mm |
| Available sizes | 40 mm, 44 mm | 42 mm |
| Water resistance | 50 m | 50 m |
| Case material | Aluminum | Fiber-reinforced polymer, aluminum bezel |
| Thickness | 0.42 in | 0.43 in |
| Weight (largest, no band) | 1.16 oz | N/A (not specified) |
Display
Too close to call
Swap one for the other and you’d lose nothing on display. If display was going to be your tiebreaker, you’ll need a different one.
Health & Fitness Sensors
Garmin Vivoactive 6 leads
If you’re keeping score, the health & fitness sensors point goes narrowly to the Garmin Vivoactive 6. The Garmin Vivoactive 6 answers with blood-oxygen readings. Wrist-based blood-oxygen data is a wellness indicator rather than a medical measurement, so treat it as a trend. If this section decides it for you, choose the Garmin Vivoactive 6.
Blood oxygen
Apple Watch SE 3: no Garmin Vivoactive 6: yes Blood-oxygen readings can add context to sleep tracking and to training at altitude.
Battery Life
Garmin Vivoactive 6 leads
In the battery life category, the Garmin Vivoactive 6 isn’t just ahead; it’s clearly ahead. In its favor, the Garmin Vivoactive 6 has 1367% more rated battery life. The Garmin Vivoactive 6 is rated to last longer between charges, a big deal on trips and long weekends. Prioritize battery life, and the Garmin Vivoactive 6 is where you should land.
Rated battery life
Apple Watch SE 3: 18 h Garmin Vivoactive 6: 11 days Ratings assume typical use; GPS workouts and always-on screens will shorten both.
Smart Features & Connectivity
Apple Watch SE 3 leads
Few areas are as clear-cut as this one: the Apple Watch SE 3 leads the smart features & connectivity section with room to spare. The Apple Watch SE 3 pulls ahead with a cellular option. With the Apple Watch SE 3, you can leave your phone at home on a run; the Garmin Vivoactive 6 depends on it for connectivity. The smart features & connectivity verdict goes to the Apple Watch SE 3.
Cellular option
Apple Watch SE 3: yes Garmin Vivoactive 6: no Cellular models usually cost more and need a plan, so it’s only worth it if you’ll use the freedom.
Storage
Apple Watch SE 3: 64 GB Garmin Vivoactive 6: 8 GB More storage leaves room for offline music, podcasts and maps on your wrist.
Full Specifications
Display
| Spec | Apple Watch SE 3 | Garmin Vivoactive 6 |
|---|---|---|
| Display type | Always-On Retina LTPO OLED | AMOLED |
| Resolution (largest) | 368 x 448 | 390 x 390 |
| Peak brightness | 1,000 nits | N/A (not specified) |
| Always-on display | Yes | Yes |
Health & Fitness Sensors
| Spec | Apple Watch SE 3 | Garmin Vivoactive 6 |
|---|---|---|
| Optical heart rate | Yes | Yes |
| ECG | No | No |
| Blood oxygen | No | Yes (winner) |
| Skin temperature | Yes | N/A (not specified) |
| GPS | Built-in L1 GPS (GLONASS, Galileo, QZSS, BeiDou) | Built-in GNSS (GPS, GLONASS, Galileo, QZSS, BeiDou) |
| Dual-frequency GPS | No | No |
Battery Life
| Spec | Apple Watch SE 3 | Garmin Vivoactive 6 |
|---|---|---|
| Rated battery lifeManufacturer rating, typical use | 18 h | 11 days (winner) |
| Rated life in low-power modeManufacturer rating | 32 h Shortest low-power mode | N/A (not specified) |
| Charging | Fast charging, 0 to 80% in about 45 min | N/A (not specified) |
Smart Features & Connectivity
| Spec | Apple Watch SE 3 | Garmin Vivoactive 6 |
|---|---|---|
| Chip | S10 | N/A (not specified) |
| Storage | 64 GB (winner) | 8 GB |
| Cellular option | Yes (winner) | No |
| Contactless payments | Yes | Yes |
| Phone compatibility | iPhone only | iPhone and Android |
| Software | watchOS | Garmin proprietary |
Design & Durability
| Spec | Apple Watch SE 3 | Garmin Vivoactive 6 |
|---|---|---|
| Case size (largest) | 44 mm | 42 mm |
| Available sizes | 40 mm, 44 mm | 42 mm |
| Water resistance | 50 m | 50 m |
| Case material | Aluminum | Fiber-reinforced polymer, aluminum bezel |
| Thickness | 0.42 in | 0.43 in |
| Weight (largest, no band) | 1.16 oz | N/A (not specified) |
Price
| Spec | Apple Watch SE 3 | Garmin Vivoactive 6 |
|---|---|---|
| Launch price | $249 (winner) | $300 |
“N/A” means the manufacturer does not specify the value or we could not confirm it. Figures marked “manufacturer rating” are the maker’s own claims, not our measurements.
Price & Value
That’s $51 between the two launch prices, a spread of 20% that makes the Apple Watch SE 3 the value-minded choice. Is the Garmin Vivoactive 6 worth $51 extra? What you get for the money is 1367% more rated battery life and blood-oxygen readings.
All prices are official US launch prices, last checked September 2025. Actual prices at stores may differ.
Which One Should You Buy?
Choose the Apple Watch SE 3 if…
- you want a cellular option
- you want more on-watch storage (64 GB vs 8 GB)
- you want the lower price and can live with the trade-offs ($51 less)
Choose the Garmin Vivoactive 6 if…
- you want the longer rated battery life (11 days vs 18 h)
- you like tracking blood oxygen during sleep or at altitude
- you prefer something easier to fit into tight spaces
Also Compared
Frequently Asked Questions
Should I buy the Apple Watch SE 3 or the Garmin Vivoactive 6?
For most people, the Garmin Vivoactive 6 is the stronger choice, unless you value a cellular option above everything else.
Which has better battery life, the Apple Watch SE 3 or the Garmin Vivoactive 6?
Going by the official figures, the Garmin Vivoactive 6 leads: 11 days versus 18 h for rated battery life. Screen use, settings and efficiency will shape your own results.
Is the Apple Watch SE 3 bigger than the Garmin Vivoactive 6?
The larger model here is the Apple Watch SE 3 (0.42 in); the Garmin Vivoactive 6 is more compact at 0.43 in.
Is the Apple Watch SE 3 cheaper than the Garmin Vivoactive 6?
The Apple Watch SE 3 is the cheaper option, launching at $51 less than the Garmin Vivoactive 6 (launch prices as of September 2025).
Does the Apple Watch SE 3 have more storage than the Garmin Vivoactive 6?
The Apple Watch SE 3 comes with more room: 64 GB versus 8 GB.
Executive Summary
Apple or Garmin? For a lot of people, the question really comes down to the Apple Watch SE 3 versus the Garmin Vivoactive 6. The biggest reason I lean toward the Garmin Vivoactive 6 is simple: it has 1367% more rated battery life. Stack blood-oxygen readings on top of that, and the Garmin Vivoactive 6’s lead grows. Still, if you care most about a cellular option, the Apple Watch SE 3 deserves a look.
In my head, the Apple Watch SE 3 is the smart features & connectivity pick and the Garmin Vivoactive 6 is the health & fitness sensors pick.
My pick: the Garmin Vivoactive 6, and I’d only look at the Apple Watch SE 3 if your top priority is a cellular option.
Personal opinion based on the data above. Your priorities may differ.