Amazfit has launched the Helio Strap Pro, a $199.99 multi-sensor training system designed to track movement quality, muscle load, and heart rate for hybrid athletes. According to Zepp Health, the system utilizes a waist-mounted sensor and an upper-arm heart-rate monitor to provide data specifically tailored for HYROX-style functional fitness, addressing limitations common in traditional wrist-based wearable technology.
Why Hybrid Athletes Are Moving Beyond Wrist-Based Tracking
Wrist-based heart rate sensors often struggle with accuracy during high-intensity functional movements. According to Amazfit, gripping a barbell or performing wrist-heavy exercises like burpees can cause signal interference that distorts heart rate data. By moving the sensor to the upper arm, the Helio Strap Pro remains closer to the heart, which the company claims provides more stable readings during strength and functional training.
This shift reflects a broader industry trend toward “movement intelligence.” While traditional trackers focus on steps and basic cardio, modern systems are increasingly capturing kinetic data. The Helio Strap Pro introduces a dedicated waist sensor to monitor core stability and movement efficiency, allowing athletes to see how their technique degrades as fatigue sets in during complex circuits.
Most standard smartwatches struggle to capture accurate heart rate data during “gripping” movements, such as farmer’s carries or sled pulls, because the constant muscle contraction in the forearm interferes with optical sensors.
How Multi-Sensor Systems Change Performance Analysis
The core value of the Helio Strap Pro lies in its ability to synthesize data from three distinct points: the upper arm, the waist, and the wrist. According to Scott Shepley, Head of Global Marketing at Amazfit, heart rate alone is an incomplete metric. By combining cardio effort with core movement and muscle load, the system allows athletes to visualize performance drops at specific stations, such as the SkiErg or sandbag lunges.

This data is managed through the Zepp App, which aggregates workout metrics with recovery stats. Unlike systems that focus solely on the training session, this approach mirrors the “HybridCharge” philosophy, which attempts to correlate real-world factors like stress, travel, and sleep with an athlete’s physical capacity.
Comparing Tracking Methods
| Feature | Wrist-Only Tracking | Helio Strap Pro System |
|---|---|---|
| Heart Rate Accuracy | Variable during gripping | High (Upper arm placement) |
| Movement Data | Limited to limb motion | Core stability and load |
Future Trends in Functional Fitness Technology
The integration of screen-free sensors suggests a move toward “invisible” technology. Future training systems will likely rely on sensors that the athlete puts on and forgets, rather than devices that require constant interaction. According to the company, the Helio Strap Pro can function independently of a watch, allowing users to track training without the distraction of a screen.
Industry experts observe that connectivity remains a primary hurdle. The Helio Strap Pro addresses this by sharing real-time data over Bluetooth to third-party devices and cycling computers. As training ecosystems become more open, athletes will likely demand that their data flows seamlessly between Apple Health, specialized coaching platforms, and fitness equipment.
If you are training for a hybrid event, prioritize sensors that offer “open connectivity.” This ensures that your hard-earned data isn’t trapped in a single app, allowing you to use your preferred analysis software.
Frequently Asked Questions
Does the Helio Strap Pro require a monthly subscription?
No. According to the official announcement, the system does not require a monthly subscription fee for data access.

Can the sensors be used without an Amazfit watch?
While the system is designed to pair with the Amazfit Balance 3 or Balance Ultra for a full experience, the sensors are built to share data via Bluetooth with other compatible devices, though full ecosystem integration is most robust within the Amazfit/Zepp environment.
What is the battery life of the sensors?
The Helio Core Motion HR offers up to 11 days of battery life, while the Helio Core Motion Waist lasts up to 40 days on a single charge.
Are you training for your first hybrid fitness race? Share your biggest tracking challenge in the comments below, or subscribe to our newsletter for more deep dives into the future of sports technology.
