TL;DR
- Buy the Polar H10 for the most-trusted reference-grade heart rate at the lower price; buy the Garmin HRM 600 if you run with a Garmin watch and want running dynamics plus standalone recording. Both are ECG chest straps, so both beat any wrist sensor for accuracy.[1][2]
- The H10 is cheaper at roughly $99-$105, against $169.99 for the HRM 600.[1][2]
- The HRM 600 does more: running dynamics, step speed loss, HRV data, and watch-free activity recording, with a rechargeable battery lasting up to two months.[2][3]
- The H10 is the validation favorite and pairs with anything over Bluetooth and ANT+; the HRM 600 leans into the Garmin ecosystem.[1][2]
This is a chest-strap-to-chest-strap matchup, which means the accuracy ceiling is already high: both transmit ECG-grade heart rate that wrist optical sensors cannot match during hard efforts. The real question is what you pay for beyond the heartbeat. The Polar H10 is the long-standing reference strap, cheaper and platform-agnostic. The Garmin HRM 600 is the feature-loaded option, adding running dynamics and standalone recording for runners inside Garmin's world. The figures here are drawn from named vendor specs and published research, not a strap we tested ourselves, each confirmed on 2026-05-26.
Verified spec and price comparison
| Spec | Polar H10 | Garmin HRM 600 |
|---|---|---|
| Price (USD) | ~$99-$105[1] | $169.99[2] |
| Sensor type | ECG chest strap[1] | ECG chest strap[2] |
| Connectivity | Bluetooth + ANT+[1] | Bluetooth + ANT+[2] |
| Running dynamics | No[1] | Yes, incl. step speed loss[3] |
| Standalone recording | Records HR to internal memory[1] | Full activity (HR, pace, distance)[2] |
| Battery | Coin cell, ~400 hours[1] | Rechargeable, up to 2 months[2] |
| Best ecosystem fit | Any device[1] | Garmin watches and Edge[2] |
Accuracy: both are reference-grade
The point of a chest strap is accuracy, and on that both deliver. Research on wearable heart-rate monitors finds chest placement the most accurate location across rest and every exercise intensity, well ahead of wrist optical sensors, which degrade as movement rises.[4] The Polar H10 is the strap most often used as the validation reference in independent studies, which is the strongest signal of trust you can ask for. The HRM 600 uses the same ECG approach, so for raw beat-to-beat accuracy treat them as equals; the differences are in features and price, not in the heartbeat.
The Garmin HRM 600's case: data beyond heart rate
The HRM 600 is more than a strap. It captures advanced running dynamics, including cadence, ground contact time, vertical oscillation, and step speed loss, and it can record a full activity (heart rate, pace, distance, steps) on its own without a watch.[2][3] Its battery is rechargeable and lasts up to two months, where the H10 uses a replaceable coin cell.[2] If you already train with a Garmin watch and want those running-form metrics, the HRM 600 is the strap built for you, and it justifies its higher price through capability rather than accuracy.
The Polar H10's case: trust and price
The H10's argument is simpler: the most-trusted heart rate signal for less money, paired with anything. It transmits over Bluetooth and ANT+, stores a session to internal memory for use without a watch, and is the strap researchers reach for as a reference.[1] It does not capture running dynamics, but if your goal is precise heart rate for zone training, intervals, or as a reference against a wrist device, the H10 does exactly that at roughly $99-$105. For most athletes who just want accurate beats, it is the value pick.
Which strap to buy
- You want the most-trusted heart rate for the lowest price: Polar H10.
- You run with a Garmin watch and want running dynamics: Garmin HRM 600.
- You need watch-free full-activity recording: HRM 600.
- You pair across many apps and brands: H10, for platform freedom and price.
Where it lands: choose the Polar H10 for reference-grade heart rate at the better price and broad compatibility; choose the Garmin HRM 600 if you live in Garmin's ecosystem and want running dynamics plus standalone recording. For why a strap beats a watch in the first place, read Optical Wrist vs Chest Strap HR, then set your zones with the Heart Rate Zone Calculator.
Confirmed on 2026-05-26. Polar and Garmin revise strap pricing periodically, so verify both current product pages before buying.
FAQ
Is the Polar H10 more accurate than the Garmin HRM 600?
No, treat them as equals on accuracy. Both are ECG chest straps, the most accurate sensor location in independent research. The H10 is the strap researchers most often use as a validation reference, but the HRM 600 uses the same approach, so the real differences are features and price.[1][2][4]
What does the Garmin HRM 600 add over the Polar H10?
Running dynamics (cadence, ground contact time, vertical oscillation, step speed loss), full standalone activity recording without a watch, and a rechargeable battery lasting up to two months. The H10 records heart rate to internal memory but not running form.[2][3]
Does the Polar H10 work with Garmin watches?
Yes. The H10 broadcasts over both Bluetooth and ANT+, so it pairs with Garmin watches and Edge units, plus Apple Watch, phones, and gym equipment. Its compatibility is broader than the Garmin-focused HRM 600.[1]
Which chest strap is better value?
The Polar H10, if you only need accurate heart rate, at roughly $99-$105. The Garmin HRM 600 costs $169.99 and earns the gap through running dynamics and standalone recording, not through better accuracy.[1][2]
References
- 1 Polar H10 heart rate sensor product page (ANT+ and Bluetooth, internal memory, IPX7/waterproof) — Polar (2026)
- 2 Garmin HRM 600 product page ($169.99; real-time HR and HRV, running dynamics, standalone activity recording, up to 2-month battery) — Garmin (2026)
- 3 Garmin unveils the HRM 600 (advanced running dynamics, step speed loss, ANT+/BLE, replaces HRM-Pro Plus tier) — Garmin Newsroom (2025)
- 4 Impact of Anatomical Placement on the Accuracy of Wearable Heart Rate Monitors During Rest and Various Exercise Intensities (chest placement most accurate) — Sensors (PMC12788198) (2025)