Amazfit Helio Strap vs Suunto Smart Heart Rate Belt 2

Amazfit Helio Strap

Amazfit Helio Strap

$99.99
Suunto Smart Heart Rate Belt 2

Suunto Smart Heart Rate Belt 2

$129

Quick verdict

Amazfit Helio Strap

$99.99

The better pick if you want:

  • To spend $29.01 less

Suunto Smart Heart Rate Belt 2

$129

The better pick if you want:

  • A higher overall score (89 vs 80)

Spec profile

Each axis ranks against the 14 products in Heart Rate Monitor on the site: the further out, the more it stands out in that spec (lighter, cheaper…).

Center: lowest in the category · Edge: highest

Amazfit Helio Strap· leads in 2

Water resistanceAffordability

Suunto Smart Heart Rate Belt 2· leads in 2

Battery lifeFeatures
  • Battery life

    240 hTop 46%
    460 hTop 11%
  • Features

    2
    4Top 21%
  • Range

    No data
    10 m
  • Water resistance

    50 mTop 11%
    30 mTop 43%
  • Affordability

    $100
    $129

A spec without data for a product is left out of its shape, so it doesn't count as a low score.

Technical Specifications

Compare features between Amazfit Helio Strap vs Suunto Smart Heart Rate Belt 2

Best value in this comparison

Essentials

$99.99
$129
June 2025
September 2026

Overview

Optical (BioTracker 6.0 PPG, 5PD + 2LED)
ECG (electrical heart rate measurement)
Optical heart rate sensor (BioTracker 6.0), Accelerometer
Six-axis motion sensor
Heart rate every second, day and night, Worn on the upper arm in training to reduce movement errors, Live heart rate broadcast to watches, bike computers and apps, Recovery and sleep insights without a subscription, HYROX race mode
ECG heart rate with QRS artifact rejection and static shielding, Running form with compatible Suunto watches: cadence, ground contact time, vertical oscillation, flight time and left/right balance, 20 hours of onboard memory, up from 3.5 hours, Streams to up to three Bluetooth devices at once, Replaceable coin cell battery

Connectivity

Bluetooth 5.2 (BLE heart rate broadcast)
Bluetooth Low Energy (up to 3 connections)
No
Yes
—
Up to 10 m
Yes (up to 21 days of heart rate data offline)
Yes (20 hours of R-R data, rolling)

Battery

Rechargeable (232 mAh, magnetic charger)
CR2032 coin cell
Up to 10 days (typical use)
Up to 460 hours (one connection, running form off, power save on)

Build & durability

5 ATM (50 meters)
30 m
Fabric band
Textile chest strap
Plastic
Plastic
Ready to buy?
Amazfit Helio Strap

Have you used the Amazfit Helio Strap before?

Help the community by answering

Suunto Smart Heart Rate Belt 2

Have you used the Suunto Smart Heart Rate Belt 2 before?

Help the community by answering

Video Reviews

Watch real-world YouTube reviews from content creators and the Trail Running community.

See all 10 video reviews

Amazfit Helio Strap

Suunto Smart Heart Rate Belt 2

Visual Comparison

See the differences between Amazfit Helio Strap and Suunto Smart Heart Rate Belt 2 in a side-by-side slider comparison.

Amazfit Helio Strap
Suunto Smart Heart Rate Belt 2

Comparison Questions

Answers based on product data and key differences.

Ask your own question

Can't find what you're looking for? Ask anything about Amazfit Helio Strap vs Suunto Smart Heart Rate Belt 2 and our AI will answer.

Enter to send · Shift+Enter for a new line
Try asking:

Frequently Asked Questions

Which offers better value: Amazfit Helio Strap vs Suunto Smart Heart Rate Belt 2?

For value comparison: The Amazfit Helio Strap ($99.99) offers better affordability compared to the Suunto Smart Heart Rate Belt 2 ($129). Consider your budget and the specific features that matter most for your trail running setup.

Which is newer, the Amazfit Helio Strap or the Suunto Smart Heart Rate Belt 2?

The Suunto Smart Heart Rate Belt 2 is newer: it came out in September 2026, and the Amazfit Helio Strap in June 2025.

Looking for alternatives to Amazfit Helio Strap?

Closest in price, with what each one does better.

See all alternatives