When comparing lightweight GPS sports watches, the Suunto 9 Peak Pro and Coros Pace 4 stand out as two of the best options for runners and endurance athletes. Both deliver long battery life, accurate GPS tracking, and advanced training metrics in slim, lightweight designs. But they target very different types of athletes.
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Below is a detailed comparison to help you decide which watch fits your training style and budget.
Table of Contents
Suunto 9 Peak Pro vs Coros Pace 4: Specs Comparison
| Feature | Suunto 9 Peak Pro | Coros Pace 4 |
|---|---|---|
| Price | 💲 Check Price | 💲 Check Price |
| Weight | 46–55 g | 32 g (nylon) |
| Display | 1.2″ Monochrome MIP | 1.2″ AMOLED |
| GPS | Multi-GNSS (4 systems) | Dual-frequency GNSS (5 systems) |
| Battery (GPS) | 40 hrs | 41 hrs |
| Battery (Smartwatch) | 21 days | 19 days |
| Fast Charging | Yes | No |
| Offline Maps | No | No |
| Voice Features | No | Yes |
| Best For | Rugged outdoor use | Lightweight running value |
Design and Build Quality
The Suunto 9 Peak Pro emphasizes durability and premium materials. It uses a sapphire crystal display and a stainless steel or titanium bezel, giving it a rugged, high-end feel. Despite the materials, it remains impressively slim at 10.8 mm.
The Coros Pace 4 focuses on minimal weight. At just 32 grams with the nylon strap, it’s one of the lightest GPS watches available. The polymer bezel keeps things durable enough for training but lacks the premium feel of metal.
Looking for a premium, ultra-durable GPS watch?
Check the latest price of the Suunto 9 Peak Pro on Amazon →
Want the lightest performance watch possible?
See current deals on the Coros Pace 4 on Amazon →
Display: Monochrome vs AMOLED
This is one of the biggest differences.
The Suunto uses a monochrome MIP display, optimized for battery life and outdoor visibility. While functional, it looks dated compared to modern AMOLED screens.
The Coros Pace 4 features a bright AMOLED touchscreen with up to 1500 nits of brightness. Text is crisp, colors pop, and visibility in direct sunlight is excellent.
If display quality matters, Coros clearly wins.
Battery Life and Charging
Battery life is excellent on both watches.
- Suunto 9 Peak Pro:
- Up to 21 days smartwatch use
- 40 hours GPS
- Extremely fast charging (10 minutes = 10 hours GPS)
- Coros Pace 4:
- 19 days smartwatch use
- 41 hours GPS
- AMOLED efficiency is surprisingly strong
Suunto wins for charging speed. Coros wins for efficiency at the price.
GPS Accuracy and Training Tracking
Both watches offer excellent GPS accuracy.
- Suunto supports four satellite systems and performs reliably in forests and cities.
- Coros adds dual-frequency GNSS, improving accuracy in dense urban environments.
Heart rate tracking is solid on both, though chest strap pairing is recommended for serious training.
Features and Software
The Suunto 9 Peak Pro includes over 95 sport modes, training load analysis, and strong third-party app support. Navigation is breadcrumb-based, with no offline maps.
The Coros Pace 4 excels in running-focused features, including:
- Race prediction
- Running fitness scores
- Virtual pacer
- Voice Notes and Voice Pins (unique in this class)
Training for races or marathons?
The Coros Pace 4 offers advanced run analytics at a fraction of the price →
Smartwatch Features
Neither watch is a true smartwatch replacement.
- Notifications are view-only
- No contactless payments
- No streaming music (Coros supports MP3 files)
Both apps, Suunto App and Coros App, are fast, polished, and sync well with platforms like Strava and TrainingPeaks.
Price and Value
- Suunto 9 Peak Pro: Premium pricing for premium materials and durability
- Coros Pace 4: Outstanding value with flagship-level features under $250
From a pure price-to-performance standpoint, Coros is hard to beat.
Final Verdict
Choose the Suunto 9 Peak Pro if you want a rugged, premium GPS watch with fast charging and long-term durability.
Choose the Coros Pace 4 if you want the lightest possible running watch with an AMOLED display, elite training features, and unbeatable value.
Both are excellent. The right choice depends on whether you prioritize build quality or maximum performance per dollar.
