Suunto Vertical 2 vs Polar Vantage V3: Battery or ECG?

Both of these are $599 multi-band GPS watches with AMOLED screens and 32GB of storage, and that’s about where the similarities stop. The Suunto Vertical 2 is built for people who actually go to the mountains. The Polar Vantage V3 is built for people who want to understand what their body is doing between workouts.

Key Differences

• Battery: Suunto runs 20 days in smartwatch mode and 65 hours on multi-band GPS. Polar gets 12 days and 61 hours.
• Durability: Suunto is 316L stainless steel (titanium variant available) with a 100m water rating. Polar is aluminum with 50m.
• Weight: Polar is 57g. Suunto is 87g. That’s a 30g gap you feel every night in bed.
• Health sensors: Polar has ECG, skin temperature, and the Elixir biosensor. Suunto sticks to optical HR and SpO2.
• Voice features: Suunto has a mic and speaker. Polar does not.
• Release timing: Suunto Vertical 2 is brand new (October 2025). Polar Vantage V3 is two years old (October 2023).

Deep Dive Comparison

Design & Comfort

The Polar Vantage V3 wins this one without much of a fight. At 57 grams in a 47mm aluminum case, it disappears on your wrist for sleep and daily wear. The Suunto Vertical 2 is a 49mm, 87-gram brick by comparison, which is the price you pay for the 100m water rating and the steel construction. If you have a smaller wrist or you want one watch for sleep tracking and the gym, Polar is the more livable option. If you want something that shrugs off rocks, packs, and ocean swims, Suunto is built for that abuse.

Battery Life

This is the cleanest win in the entire matchup. The Suunto Vertical 2 delivers 480 hours (20 days) in smartwatch mode versus 288 hours (12 days) on the Polar Vantage V3. On multi-band GPS, the gap is smaller but still real: 65 hours for Suunto, 61 hours for Polar. For a weekend warrior, both are fine. For a 100-mile race, multi-day fastpacking, or a week-long trip with no outlets, the Suunto is the only correct answer.

Health & Fitness Features

Polar’s whole pitch is recovery and physiology, and the Vantage V3 backs it up with ECG, skin temperature tracking, SpO2, and the Elixir biosensor. That’s a meaningfully richer health stack than what Suunto ships. The Vertical 2 covers HR, SpO2, barometric altimeter, thermometer, and the usual motion sensors, which is plenty for tracking workouts but won’t give you nightly ECG readings or skin temp baselines. Both watches use multi-band GPS, so track accuracy in cities and canyons is comparable.

Smart Features

Suunto added a microphone and speaker to the Vertical 2, which means voice prompts and calls through your phone. Polar still doesn’t include either. Neither watch has NFC payments, which is a real miss at $599 in 2026. Both connect over Bluetooth, but Suunto adds ANT+ and Wi-Fi, which makes syncing to old chest straps and pushing files easier. Both carry 32GB of storage for offline maps and music.

Price & Value

Both watches launched at $599. Polar has been on the market since October 2023, so you can usually find the Vantage V3 discounted to around $399 to $449 if you watch for sales. The Suunto Vertical 2 is brand new, so expect to pay close to full price into 2026. If you want a deal today, the Polar is the value play. If you want the newest hardware and the longest battery, you pay sticker for the Suunto.

Technical Specs

Spec	Suunto Vertical 2	Polar Vantage V3
Launch Price	$599	$599.95
Case Size	49mm	47mm
Weight	87g	57g
Case Material	316L stainless steel (titanium variant available)	Aluminum
Water Rating	100m	50m
Display	1.5-inch LTPO AMOLED, 466 x 466	1.39-inch AMOLED, 454 x 454
Battery (Smartwatch)	480 hours (20 days)	288 hours (12 days)
Battery (Multi-band GPS)	65 hours	61 hours
GPS	Multi-band	Multi-band
Connectivity	Bluetooth, ANT+, Wi-Fi	Bluetooth 5.1, USB-C
NFC Payments	No	No
Mic & Speaker	Yes	No
Storage	32GB	32GB
Sensors	HR, SpO2, barometric altimeter, barometer, thermometer, compass, accelerometer, gyroscope	Elixir, ECG, SpO2, skin temp, OHR Gen 4, barometer, magnetometer, accelerometer, ambient light
Release Date	October 2025	October 2023

The Verdict

Buy the Suunto Vertical 2 if you do ultras, expeditions, multi-day backcountry trips, or open-water swims. The 20-day battery, 65-hour GPS, 100m water rating, and steel construction are exactly what those use cases demand, and the mic/speaker are a nice modern touch. You will feel the 87 grams on your wrist, but you will also forget your charger exists.

Buy the Polar Vantage V3 if you train hard and care about recovery, you want ECG and skin temp on your wrist, or you simply want a watch that’s pleasant to wear all day and all night. It’s lighter, smaller, has a richer health sensor stack, and right now it’s discounted often enough that you can save $150 or more versus the Suunto. Just don’t take it past the pool.

For most endurance athletes who aren’t doing 24-hour events, the Polar Vantage V3 is the smarter buy at $599 and a no-brainer at $429. For the mountain crowd, the Suunto Vertical 2 is the only one of these two that belongs on your wrist.

Frequently Asked Questions

Which watch is better overall, the Suunto Vertical 2 or the Polar Vantage V3?

It depends on your sport, but for most people, the Polar Vantage V3 is the more well-rounded daily watch thanks to its lighter weight, ECG, and skin temperature tracking. The Suunto Vertical 2 wins for adventure athletes who need 20-day battery, multi-day GPS endurance, and a 100m water rating in a tougher case.

Does the Polar Vantage V3 have better battery life than the Suunto Vertical 2?

No, and it isn’t close. The Suunto Vertical 2 lasts 480 hours (20 days) in smartwatch mode and 65 hours on multi-band GPS, while the Polar Vantage V3 lasts 288 hours (12 days) and 61 hours respectively. The GPS gap is small, but the day-to-day battery gap is significant.

Are these watches worth $599 in 2026?

The Suunto Vertical 2 is worth full retail if you actually need the battery and durability — those specs are class-leading. The Polar Vantage V3 launched at $599.95 but is regularly discounted to $399–$449 now that it’s two years old, which is where its value gets compelling against newer rivals.

Do both watches work with iPhone and Android?

Yes, both pair with iPhone and Android over Bluetooth and sync to their respective apps (Suunto app and Polar Flow). Suunto adds ANT+ and Wi-Fi for chest strap pairing and faster syncing, while Polar uses Bluetooth 5.1 plus USB-C for charging and data transfer.

Which one is better for ultra runners and expedition athletes?

The Suunto Vertical 2, decisively. The 65-hour multi-band GPS battery, 100m water rating, steel or titanium case, and built-in mic and speaker make it the right tool for 100-mile races, fastpacking, and multi-day events where the Polar’s 12-day smartwatch battery and aluminum/50m construction become liabilities.