Amazfit Helio Strap 2: What to Expect — and the Question Amazfit Needs to Answer

So the information below was my earlier predictions based on zero intel from the company. I’ll be honest: I underestimated the product big time! However, that underestimation was due to the PRO version (effectively Helio strap 2) having an extra motion-sensor pod focused on improving a narrow range of HYROX- and strength-related metrics. It’s a market-leading concept, but perhaps less interesting if you’re looking for a wellness sensor like the Whoop MG. Amazfit isn’t going down that route, at least not yet.

The Hardware Is Not the Story

Fact: The CFO confirmed a successor to the Amazfit Helio is in development. Further, Zepp Health filed regulatory documents with the FCC under model numbers A2671 and A2672 in April 2026, requesting a 180-day confidentiality window, which points to a launch window of August to November 2026. June and July feel too soon.

Two model numbers filed as electrically identical almost certainly mean the same Core-and-Strap split as the original Helio, i.e. the sensor module sold separately alongside the complete unit, not a Pro model or some other variant.

Here’s the thing. The FCC filing lists the battery capacity at 230 mAh, which is nearly identical to that of the current Helio Core. The physical cell is not getting larger. Any battery life improvement will come from gains in sensor and radio efficiency, not from a bigger cell. From experience, that’s +30% tops. The core form factor will not change; the only plausible hardware tweak is an easier strap-swapping mechanism, which would also drive additional accessory sales. Perhaps also more accurate, non-HR sensors – like a better accelerometer.

That is it for hardware. No ECG. No AFib. No blood pressure. Those require electrical sensors, patented algorithms, medical research, and accreditation — none of which come to a $99 strap.

Of the missing features, high/low HR alerts like Garmin’s abnormal HR alerts already exist in the Amazfit ecosystem. The next-easiest addition would be an Irregular Heart Rhythm Notification (IHRN) — Apple and Samsung’s term for PPG-based AFib screening, which is a non-diagnostic wellness claim. However, Zepp Health has not shipped this on any device yet. The logical order is watch first, strap second.

So what is the Helio Strap 2 actually for if there’s only a modest improvement in battery and perhaps accuracy?

The Real Product Is the Ecosystem

Zepp OS 6, launched with the Balance 3 and Balance Ultra, introduced Multi-Device Activity Sync, consolidating steps, calories, and distance across devices. Useful. But it does not sync workout training load, nor any of the advanced physiology stuff. A run recorded on the Helio Strap does not currently feed the Balance 3’s HybridCharge score. The watch does not, in any meaningful physiological sense, know the session happened on the band.

That is the gap the Helio Strap 2 needs to close to get existing owners to buy Helio and to get a new Helio owner to buy a watch later. Only a new capability on a Gen 2 device, kept off from the existing Gen 1 Helio strap, makes the ecosystem argument real.

There’s a but.

Garmin took two years to get from basic activity sync (TrueUp, 2016) to full training load sync (Physio TrueUp, 2018). 2028 is too long to wait for Amazfit to jump to the next level.

Fitbit Air, alongside Pixel Watch, and CIRQA, alongside other Garmin devices, already sync properly. With modern AI coding methods, I think Amazfit could close that gap in months rather than years. The Helio Strap 2 launch and the arrival of workout-level sync could be the same announcement. Soon. Ish.

• If they are: an Amazfit watch owner buys the Gen 2 strap; the watch covers all sports; the strap covers the gym, sleep and general life. HybridCharge sees it all using the next level of Activity sync. That is a decent ecosystem feature and a compelling $99 companion purchase.
• If they are not, the Helio Strap 2 is a well-specified standalone band with a very slightly better battery that competes on price against the Fitbit Air at $99.99 and undercuts the Polar Loop Gen 2 at $199. Still a good product for a first-time buyer who wants recovery tracking without a subscription, but not worth the considerable effort Amazfit will have put into iterating on a new model.

Everything Else I Expect

Fast charging is the most obvious hardware upgrade to match the Fitbit Air, which achieves a full day from five minutes. The current Helio Strap takes 2 hours to charge from empty. Amazfit will not necessarily have known what Air was going to release with or that Air was even planned, the brand would have realised that faster charging is a more obvious next feature to add.

Open BLE HR broadcast stays. The current device already connects to Garmin watches, Apple Watch, Coros, and Garmin Edge computers, and most apps and devices already support it by implementing the standard. A second concurrent BLE connection is possible, but I would err here on the side of it being relatively unlikely. Smart Wake, a haptic alarm timed to light sleep, is on my wishlist; the motor is already there, and Fitbit Air also has one.

Price can’t go above $99.99; Fitbit Air has set that anchor firmly. Very firmly.

The Market Has Changed

When the original Helio Strap launched in June 2025, Whoop was the only serious screenless competitor, and the no-subscription argument was decisive. Amazfit was the obvious choice for anyone on a budget wanting core features.

Fitbit Air and, to a lesser extent, Polar Loop Gen 2 have ended that. Amazfit needs a multi-device ecosystem to work, or a subscription tier worth paying for. At $99 with no recurring subs, the margin for error is thin.

The Helio Strap 2 won’t be a hardware refresh. It will be a tweak that justifies a purchase into an improved ecosystem.

Amazfit Helio Strap

Sports Tracker Biceps Band

$99

£99

+other retailers

Quick answers

When will the Amazfit Helio Strap 2 be released?
Zepp Health has not announced a release date. The FCC confidentiality window points to August to November 2026 as the likely launch period.

What is the difference between the Helio Strap and the Helio Core?
The Helio Core is the sensor module only. The Helio Strap is the complete unit, including the strap. The Core can be used separately with the Helio Armband or Arm Sleeve accessories.

Does the Amazfit Helio Strap broadcast heart rate to Garmin and other devices?
Yes. The current Helio Strap already broadcasts heart rate over standard BLE to Garmin watches, Apple Watch, Coros, and Garmin Edge cycling computers. This is expected to continue on the Helio Strap 2.

Will the Helio Strap 2 have ECG or AFib detection?
No. Those features require electrical sensors and medical accreditation at a higher price point. They are present on the Whoop MG but are not expected here.

Does the Helio Strap work with HybridCharge on the Balance 3?
Partially. Daily activity totals sync via Multi-Device Activity Sync. Whether workout training load from strap sessions feeds HybridCharge on a paired Balance 3 is not yet confirmed, and is the key question the Helio Strap 2 launch needs to answer.

This article is speculative. Zepp Health has not announced the Amazfit Helio Strap 2, and no release date has been confirmed.

For the full Amazfit range, accuracy data and Zepp Health analysis: Amazfit sports watch guide.

Last Updated on 28 June 2026 by the5krunner

the5krunner

tfk is the founder and author of the5krunner, an independent endurance sports technology publication. With 20 years of hands-on testing of GPS watches and wearables, and competing in triathlons at an international age-group level, tfk provides in-depth expert analysis of fitness technology for serious athletes and endurance sport competitors. ID