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| Amazfit’s new Arm Sleeve for Helio devices |
The fitness tech brand introduces an alternative mounting solution for its Helio Core module, promising enhanced accuracy for serious athletes.
Amazfit has officially launched the Helio Arm Sleeve in the United States, marking a significant expansion of its modular fitness tracking ecosystem. The new accessory arrives alongside two fresh color options for the existing Helio Armband—charcoal and light gray—which are currently available for $14.99 on Amazon.
Designed specifically to house the Helio Core—the same removable sensor module found at the heart of the Helio Strap—the Arm Sleeve aims to solve a common problem faced by athletes who rely on wrist-based tracking. According to the brand, the accessory is engineered to deliver "more consistent readings," particularly during high-intensity or energetic workouts where traditional wrist-worn devices can struggle with accuracy.
Why the Arm Sleeve Offers Better Accuracy
The secret to the Arm Sleeve's improved performance lies in its positioning. By relocating the sensor from the wrist to the upper arm, Amazfit claims users will experience significantly less interference from wrist flexion and grip strain—two factors that frequently compromise measurement precision during exercises like weightlifting, rowing, or calisthenics. Placing the sensor closer to the heart allows for more stable optical heart rate monitoring and cleaner data collection, making it an appealing option for serious runners, CrossFit enthusiasts, and anyone who finds wrist-based monitors unreliable during dynamic movement.
Comfort and Sizing Options
Comfort has clearly been a priority in the Arm Sleeve's design. The accessory is constructed from a blend of 75% polyamide and 25% spandex, materials chosen for their breathability, moisture-wicking properties, and four-way stretch. The sleeve is available in three sizes to accommodate a wide range of arm circumferences:
- Small: 22–28 cm (8.7–11.0 inches)
- Medium: 27–35 cm (10.6–13.8 inches)
- Large: 35–45 cm (13.8–17.7 inches)
While promotional images suggest the Arm Sleeve features a noticeably wider profile than the original Helio Armband—likely to enhance stability during movement—the company has not yet published exact width measurements.
Pricing and Availability
Fitness enthusiasts can now purchase the Amazfit Helio Arm Sleeve directly from the brand's official US online store, where it is priced at $19.99. It remains unclear whether or when this accessory might become available in other international markets.
Potential buyers should note that the Arm Sleeve is sold as an accessory only—it does not include the Helio Core module or its charging dock. Customers who already own a Helio Strap can simply remove the Core unit and transfer it to the new sleeve for workouts where upper-arm placement is preferred.
For those interested in the original wrist-worn format, the Helio Armband is now offered in the new charcoal and light gray colorways alongside the existing black version, with prices starting at $14.99 on Amazon.
With the introduction of the Arm Sleeve, Amazfit continues to build out its modular approach to fitness tracking, giving users the flexibility to choose the form factor that best suits their training style without investing in an entirely new sensor.
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| The Amazfit Arm Sleeve for Helio |