Polar H9
Score: 83/100
Fitbit Inspire 3
Score: 77/100Rankings
The Polar H9 is a chest-mounted ECG heart-rate sensor offering exceptional accuracy and a 400-hour battery life. Its main trade-off is the lack of onboard storage and reliance on a replace-once coin cell battery. Ideal for athletes who need precise data across multiple sports and appreciate dual-protocol connectivity.
The Fitbit Inspire 3 is a slim, lightweight fitness tracker that excels with a 120-hour battery and built-in GPS. Its trade-off is a tiny screen and lack of advanced smartwatch features. Best for users who want basic health monitoring and swimming capability without a bulky device.
| Attribute | | |
|---|---|---|
400 hoursbest | 120 hours | |
| ↓ lower better | 60 gbest | 108 g |
— | 0.7 inbest |
Click an attribute name to sort · Green = best, red = worst (relative to this comparison)
| Attribute | | |
|---|---|---|
Battery & Power(1) | ||
Battery Life (hours) | 400 hours | 120 hours |
Build & Design(2) | ||
Weight (g) | 60 g | 108 g |
Water Resistance (IP Rating) | IP68 | 50 meters |
General(1) | ||
Operating Temperature (°C) | -10 to 50 °C | 0-40 °C |
Products in the top-left offer the best value (high score, low price).
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.
