Best for heart rate accuracy
Suunto Race 2
4.1 feature score
Highest scored product for this feature based on supporting review evidence.
Best Suunto Smart Watch for heart rate accuracy
heart rate accuracy Decision Dashboard
Safest pick
Suunto Run
3.6 feature score
Balances feature score, supporting reviews, and overall product strength.
Most evidence
Suunto Race S
13 supporting reviews
Has the broadest review evidence for this feature.
Best overall product
Suunto Vertical 2
3.8 overall score
Strongest overall product among items with scored evidence for this feature.
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Heart-rate accuracy was the most debated upgrade: many reviewers called it a major improvement or accurate enough for training, while several still found unreliable readings in hard efforts or certain...
Pros: operating system experience, brightness
Cons: safety features, health tracking accuracy
Heart-rate accuracy was mixed-positive: many reviewers saw accurate or much-improved readings, while others reported startup wobble, high-intensity drift, fit sensitivity, or inconsistent results.
Pros: operating system experience, materials quality
Cons: contactless payments, onboard music storage
Heart-rate accuracy was the most mixed core tracking area: reviewers praised steady running results and external strap support, while several saw misses during intervals, cycling, swimming, weights, or harder scenarios.
Pros: comfort, value for money
Cons: contactless payments, Wi-Fi connectivity
Heart-rate accuracy is the most divided attribute: several reviewers found the updated sensor solid or precise, while others reported poor readings and recommended an external strap.
Pros: workout tracking variety, value for money
Cons: blood oxygen tracking, contactless payments
Heart rate accuracy was the most mixed tracking area, ranging from solid on steady workouts to delayed, spiky, or chest-strap-dependent during harder efforts.
Pros: step counting accuracy, durability
Cons: voice assistant quality, contactless payments
Heart-rate accuracy was the clearest recurring flaw, with multiple reviewers reporting underestimation, failures, or unreliable wrist readings during workouts.
Pros: battery life, durability
Cons: resume later function, ECG functionality