Garmin Instinct 3 Solar vs Suunto 9 Peak Pro
Garmin Instinct 3 Solar (2025, listed at $449) and Suunto 9 Peak Pro (2022, listed at $549) are both sport watches, so the choice comes down to specifics.
Specs last updated · prices are list prices
Garmin Instinct 3 Solar
Solar-charged tank — months of battery, MIL-STD-810 toughness, brilliant always-on MIP screen.
Suunto 9 Peak Pro
Slim 10.8mm titanium adventurer — dual-band GPS, breadcrumb maps, 21-day smartwatch battery.
The verdict
On the numbers we track, Garmin Instinct 3 Solar wins on battery life (24 days vs 21 days) and price ($449 vs $549); Suunto 9 Peak Pro wins on weight (55 g vs 58 g) and tracked features (4 vs 3).
Bottom line: there is no clear winner on specs (2 to 2). Decide on phone support, how often you are willing to charge, your main sport and your budget, or run the free quiz to see how each ranks for your answers.
Spec by spec
| Spec | Garmin Instinct 3 Solar | Suunto 9 Peak Pro |
|---|---|---|
| Battery (rated) | 24 days | 21 days |
| Weight | 58 g | 55 g |
| List price | $449 | $549 |
| Water rating | 10ATM | 10ATM |
| Tracked features | 3 | 4 |
| Case size | 45 mm | 43 mm |
| Display | MIP | MIP |
| Works with | both iPhone and Android | both iPhone and Android |
| Listed best for | outdoor adventure and multisport and triathlon | outdoor adventure, multisport and triathlon and running |
| Released | 2025 | 2022 |
Trophy marks the better value on the five measurable specs. Battery is the manufacturer's rating, not our test. How we score is on the methodology page.
Feature overlap
Both have (3)
- built-in GPS
- blood-oxygen (SpO₂)
- swim tracking
Only Garmin Instinct 3 Solar (0)
Nothing unique.
Only Suunto 9 Peak Pro (1)
- offline maps
Which one should you pick?
Pick the Garmin Instinct 3 Solar if…
- You want to spend less: it lists for $100 less.
- You want fewer charges: about 24 days per charge vs 21 days.
- You might switch phones: it works with both iPhone and Android, the Suunto 9 Peak Pro only works with Android.
- You want the newer model (2025 vs 2022).
Skip it if…
- • You want a bright, vivid AMOLED screen — this one uses a lower-power display.
Pick the Suunto 9 Peak Pro if…
- You want a lighter watch: 55 g vs 58 g.
- You need offline maps, which the Garmin Instinct 3 Solar does not list.
- Your main use is running: it is listed for that and the Garmin Instinct 3 Solar is not.
- You might switch phones: it works with both iPhone and Android, the Garmin Instinct 3 Solar only works with Android.
Skip it if…
- • You want a bright, vivid AMOLED screen — this one uses a lower-power display.
Frequently asked questions
Which has better battery life, the Garmin Instinct 3 Solar or the Suunto 9 Peak Pro?
The Garmin Instinct 3 Solar has the longer rated battery life: about 24 days per charge against 21 days. These are manufacturer ratings; heavy GPS, always-on display and cellular use will cut both.
Which is cheaper, the Garmin Instinct 3 Solar or the Suunto 9 Peak Pro?
The Garmin Instinct 3 Solar has the lower list price: $449 against $549 in our database. List prices change often, so check Amazon for today's price.
Do the Garmin Instinct 3 Solar and Suunto 9 Peak Pro work with iPhone and Android?
Yes, they have the same phone support: both iPhone and Android.
Which is better for swimming, the Garmin Instinct 3 Solar or the Suunto 9 Peak Pro?
Neither has an edge on water rating: both are rated 10ATM. 10ATM is suitable for swimming and surface water sports. It is not a dive rating unless the maker says so.
Not sure either is right for you?
Nine questions about your phone, sport, wrist and budget, scored against all of our watches with the reasoning shown.
Take the free quizWhere each one ranks #1 in our quiz
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