Polar
The Polar H9 is a chest‑mounted ECG heart‑rate sensor that delivers fast, accurate readings and supports both Bluetooth LE and ANT+ connections. It offers a long 400‑hour battery life, 5 kHz underwater transmission, and a washable soft strap, targeting athletes who need reliable data across multiple sports.
Pros
Current
$69.90
Average
$62.64
Lowest
$59.41
Highest
$69.90
Lower = better sales rank
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Cons
From Expert Reviews
Praised by Experts
Criticized by Experts
Expert Opinion
Editors and CrossFit‑focused reviewers consider the Polar H9 the best‑value chest strap, emphasizing its precise ECG tracking, dual‑protocol connectivity, and underwater capability. While the H10 edges it out in raw accuracy, the H9’s soft strap, long battery life, and lower price make it a strong choice for most athletes.
Common Complaints
Soft strap wear after frequent machine washing; inability to store data locally, requiring a paired device; need to replace the CR‑2025 battery once the 400‑hour life is exhausted; dependence on compatible apps or equipment for functionality.
How It Compares
vs. Polar OH1+
Advantages
Disadvantages
Choose the OH1+ if you prefer a wrist‑worn, comfortable sensor and can manage daily charging; otherwise the H9 provides longer battery life and broader connectivity.
vs. Polar Verity Sense
Advantages
Disadvantages
Select the Verity Sense for wrist‑wear convenience and rechargeable power, but opt for the H9 when you need the most accurate ECG data and extended battery endurance.
