At a Glance: The Verdict
| Polar Vantage V3 | Garmin Forerunner 965 |
|---|---|
|
Best For: Recovery-obsessed athletes who want ECG and skin temp baked in The V3 is the only watch here with a medical-grade ECG and a wrist temperature sensor. It also wins on raw GPS endurance at 61 hours multi-band. The trade-off is no contactless payments and a much shorter daily-wear battery. |
Best For: Runners and triathletes who want the deepest training ecosystem 23 days of smartwatch battery, Garmin Pay, Wi-Fi syncing, and the most mature training analytics on the market. It’s lighter on the wrist and connects to the widest gear ecosystem via ANT+. The Forerunner 965 is the safer pick for most buyers at this price. |
Quick Buy Path
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If these are already your two finalists, compare current pricing now, then keep reading for the full verdict.
Both watches launched in 2023 at $599 with multi-band GPS, AMOLED displays, and 32GB of storage. They look similar on a spec sheet, but they’re aimed at very different wrists. One leans into recovery and lab-grade health data. The other leans into training depth and smart-watch convenience.
Key Differences
- Smartwatch battery: Garmin Forerunner 965 lasts 23 days vs. Polar Vantage V3 at 12 days. Almost double.
- GPS battery: Polar flips it, hitting 61 hours of multi-band GPS vs. Garmin’s 31 hours.
- Health sensors: Polar has ECG and skin temperature. Garmin does not.
- Contactless payments: Garmin has NFC (Garmin Pay). Polar does not.
- Connectivity: Garmin adds ANT+ and Wi-Fi. Polar is Bluetooth-only.
- Weight: Garmin is 53g vs. Polar at 57g, despite nearly identical case sizes.
Deep Dive Comparison
Design & Comfort
Both watches sit at roughly 47mm. The Polar Vantage V3 uses an aluminum case at 57 grams. The Garmin Forerunner 965 uses a fiber-reinforced polymer body with a titanium bezel and comes in at 53 grams. That 4-gram gap doesn’t sound like much, but on a long marathon or 100-mile ultra it adds up. Both have 1.39 to 1.4-inch AMOLED displays at 454 x 454 resolution, so screen quality is a wash.
Battery Life
This is where these watches split hard. The Forerunner 965 will go 23 days in smartwatch mode. The Vantage V3 maxes out at 12 days. If you wear your watch all day every day and want to forget about charging, Garmin wins easily.
Flip to GPS, though, and Polar pulls ahead. The Vantage V3 logs 61 hours in full multi-band mode. The Forerunner 965 stops at 31 hours. For ultra runners, expedition athletes, or anyone tracking multi-day events, Polar’s 2.5 days vs. Garmin’s 1.3 days is a real advantage.
Health & Fitness Features
Polar’s Elixir sensor stack is the headline. You get on-wrist ECG, SpO2, skin temperature, and the fourth-generation optical heart rate sensor. That’s the most complete health panel in this price bracket, and it feeds Polar’s recovery, sleep, and Nightly Recharge scoring.
Garmin counters with depth, not breadth. You get Pulse Ox, barometric altimeter, and the full Garmin training brain: Training Readiness, HRV Status, Race Predictor, PacePro, and Up Ahead navigation. Both run multi-band GPS and both deliver excellent track accuracy. If you race, Garmin’s analytics are still ahead. If you want raw biometric data, Polar takes it.
Smart Features
Garmin Pay is a real quality-of-life feature mid-run when you need a bottle of water or a coffee after. Polar offers nothing here. Garmin also adds Wi-Fi for syncing and music transfers, plus ANT+ to pair with virtually any chest strap, power meter, or indoor trainer. Polar relies on Bluetooth 5.1 only. Neither watch has a microphone or speaker, so phone calls on the wrist are off the table for both.
Price & Value
Both launched at $599. Street pricing as of 2026 puts the Forerunner 965 around $499 to $549 and the Vantage V3 around $449 to $499. Polar is the slightly cheaper buy now, but the Garmin’s longer support window and broader ecosystem make the small premium worth it for most runners.
Technical Specs
| Spec | Polar Vantage V3 | Garmin Forerunner 965 |
|---|---|---|
| Launch Price | $599.95 | $599.99 |
| Case Size | 47mm | 47.2mm |
| Weight | 57g | 53g |
| Case Material | Aluminum | Polymer with titanium bezel |
| Display | 1.39-inch AMOLED, 454 x 454 | 1.4-inch AMOLED, 454 x 454 |
| Water Rating | 50m | 5 ATM |
| Battery (Smartwatch) | 12 days (288 hours) | 23 days (552 hours) |
| Battery (Multi-band GPS) | 61 hours | 31 hours |
| GPS | Multi-band | Multi-band |
| Connectivity | Bluetooth 5.1, USB-C | Bluetooth, ANT+, Wi-Fi |
| NFC Payments | No | Yes (Garmin Pay) |
| Sensors | Elixir, ECG, SpO2, Skin Temp, OHR Gen 4, Barometer | HR, Pulse Ox, Barometric Altimeter, Compass, Thermometer |
| Storage | 32GB | 32GB |
The Verdict
Buy the Garmin Forerunner 965 if you’re a runner, triathlete, or cyclist who wants the deepest training analytics, the longest daily battery, contactless payments, and the broadest accessory ecosystem. For most buyers cross-shopping these two, this is the right watch.
Buy the Polar Vantage V3 if you specifically want ECG and skin temperature data on your wrist, plan to track multi-day GPS efforts, or already live inside Polar Flow and trust its recovery scoring. The biometric depth here is genuinely class-leading.
Frequently Asked Questions
Which watch is better overall, the Polar Vantage V3 or the Garmin Forerunner 965?
The Garmin Forerunner 965 is the better watch for most buyers. It nearly doubles the smartwatch battery life, adds NFC payments and Wi-Fi, weighs less, and ships with a more mature training analytics suite. The Vantage V3 is the better choice only if you specifically want ECG or skin temperature data.
Does the Polar Vantage V3 have better health tracking than the Garmin Forerunner 965?
Yes, on raw sensor count. The Vantage V3 includes ECG, skin temperature, and SpO2, while the Forerunner 965 has Pulse Ox but no ECG or wrist temperature sensor. If you care about recovery, HRV trends, and overnight body baselines, Polar gives you more inputs.
Is $600 too much for either watch in 2026?
At full launch price, both are aggressive buys when the older Forerunner 955 and Vantage V2 still perform well at lower prices. Street prices have dropped to roughly $449 to $549 for both, which is fair value for multi-band GPS and AMOLED. Wait for a sale below $500 if you can.
Which works better with an iPhone vs. Android?
Both watches pair cleanly with iOS and Android via Bluetooth. The Forerunner 965 has a small edge if you use Wi-Fi syncing or want broader third-party app support through Connect IQ. The Vantage V3 syncs reliably to Polar Flow on either platform but offers fewer smart features regardless of phone.
Which watch is better for ultra runners and long GPS sessions?
The Polar Vantage V3 is the better ultra watch on battery alone. You get 61 hours of multi-band GPS vs. 31 hours on the Forerunner 965, which is the difference between finishing a 100-miler on one charge or not. For sub-marathon distances, Garmin’s deeper pacing tools matter more than the battery gap.
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Specs and features may change. Always verify details on the manufacturer’s official site before purchasing.
