Polar H9
Score: 83/100
Amazfit Band 7
Score: 80/100Rankings
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 Amazfit Band 7 is a budget-friendly fitness band featuring a 1.47-inch AMOLED screen, up to 18 days of battery life, and 120 sport modes with Alexa integration. It lacks built-in GPS and can suffer from app sync issues. It targets casual fitness enthusiasts who value long battery and a vibrant display.
| Attribute | | |
|---|---|---|
400 hours | 432 hoursbest | |
| ↓ lower better | 60 g | 28 gbest |
— | 1.47 inbest | |
— | 120best |
Click an attribute name to sort · Green = best, red = worst (relative to this comparison)
| Attribute | | |
|---|---|---|
Battery & Power(1) | ||
Battery Life (hours) | 400 hours | 432 hours |
Build & Design(2) | ||
Weight (g) | 60 g | 28 g |
Water Resistance (IP Rating) | IP68 | 5 ATM |
Connectivity(1) | ||
Bluetooth Version | Bluetooth LE | 5.2 |
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.
Professional reviewers view the Amazfit Band 7 as a strong budget option, lauding its long battery life, bright AMOLED display and generous feature set including Alexa and 120 sport modes. They note the trade-offs of missing GPS, limited advanced health sensors and occasional app sync issues, positioning it as a value-focused alternative to pricier smart bands.
Everyday users praise the Band 7 for its impressive battery endurance, vibrant screen and comfortable all-day wear, especially appreciating its water resistance for swimming. Common complaints revolve around app stability, occasional heart-rate inaccuracies, the band's length on smaller wrists, and the lack of independent GPS for outdoor activities.
“Fitbit aesthetics for under $50”
“nice 1.47-inch HD AMOLED”
“surprising battery life”
