Fitness rings · Model guide · Maker specs
Amazfit Helio Ring
Get the Amazfit Helio Ring if you wear size 8, 10 or 12 and use Zepp: it's $149.99, and Amazfit says no subscription is required.
Product images
Amazfit Helio Ring, from its Amazon listing.
Credit: Amazon.com (Associates Program). Amazon listing
Product image from the Amazon listing.
In short
Get the Amazfit Helio Ring if you wear size 8, 10 or 12 and use Zepp: it's $149.99, and Amazfit says no subscription is required. It's 8mm wide and 2.6mm thick in titanium alloy, rated to 10 ATM and for up to 4 days per charge. Its fine print ties readiness insights to Zepp Aura, which Amazfit says Helio owners get free. Skip it if you want 10–15 days between charges.
Who it is for
- People who wear US size 8, 10 or 12 and want a $149.99 ring that Amazfit says needs no subscription.
- Amazfit watch owners who want sleep and recovery data in the same Zepp app. Helio works on its own or alongside a listed Amazfit watch.
- Swimmers who'll take it off for hot showers and saunas. It's rated to 10 ATM, or 100 meters.
Who should skip it
- Anyone who isn't a size 8, 10 or 12. Amazfit makes no other sizes, so there's no full 6–14 run to choose from.
- Anyone who wants 10–15 days between charges. Helio is rated for up to 4 days on Amazfit's default settings.
- Anyone who wants medical readings. Amazfit says Helio and the Zepp app aren't medical devices and their results are for reference only.
What sets it apart
- Zepp Aura Premium free for Helio owners, Amazfit says, with custom sleep sounds, weekly and monthly sleep reports and an AI chatbot.
- An EDA sensor and a 3-axis gyroscope on top of the PPG heart-rate sensor (1 dual-color LED, 2 photodiodes), temperature sensor and 3-axis accelerometer.
- Sleep stages including light, deep and REM, a sleep score and nap tracking, with sleep breathing quality as an option.
Caveats
- The 4-day battery rating assumes heart rate and stress readings every 10 minutes, assisted sleep on, and sleep breathing quality and SpO2 off.
- Amazfit gives two sets of weights: 3.75 grams for size 10 and 3.82 for size 12 in its spec table, but about 3.8 and 4 grams in a footnote.
- There's no USB-C cable in the box, only the wireless charger, so you'll need your own cable.
Key specs
In the same order on every ring page, so you can compare models.
| Spec | Value | Source and notes |
|---|---|---|
| Materials | Titanium-alloy outer ring; resin inner ring | Amazfit US Helio Ring page |
| Width | 8 mm | Amazfit US Helio Ring page |
| Thickness | 2.6 mm | Amazfit US Helio Ring page |
| Weight | Size 8: 3.65 g; size 10: 3.75 g; size 12: 3.82 g. Amazfit's footnote 1 gives about 3.8 g for size 10 and about 4 g for size 12 | Amazfit US Helio Ring pageAmazfit's two weight figures don't match. |
| Sizes | US 8, 10 and 12 only (finger circumference 60.3, 66 and 71.3 mm) | Amazfit US Helio Ring page, size chart |
| Finishes | Titanium (one finish) | Amazfit US Helio Ring page |
| Battery | Up to 4 days of typical use. Capacity: 16.5 mAh (size 8), 18.5 mAh (size 10), 20.5 mAh (size 12) | Amazfit US Helio Ring pageRated with heart rate and stress every 10 minutes, assisted sleep on, and sleep breathing quality and SpO2 off. |
| Charging | Wireless; about 1 hour 40 minutes from empty | Amazfit US Helio Ring page and FAQ |
| Charging case | Wireless ring charger in the box; USB-C cable not included | Amazfit US Helio Ring packing list and FAQ |
| Water resistance | 10 ATM, up to 100 m (ISO 22810:2010). Footnote 8: splashes, snow, showering, swimming and some high-speed water sports; take it off for a hot shower or sauna. SGS test report SHES230601249871 | Amazfit US Helio Ring page |
| Sensors | BioTracker PPG heart-rate sensor (1 dual-color LED, 2 photodiodes); temperature sensor; EDA sensor; 3-axis accelerometer; 3-axis gyroscope | Amazfit US Helio Ring page |
| Sleep tracking | Sleep duration; stages including light, deep and REM; sleep score; naps. Assisted sleep monitoring and sleep breathing quality are settings in Zepp; the battery rating in footnote 9 has sleep breathing quality off | Amazfit US Helio Ring page and FAQ |
| Activity / fitness | 4 sports modes; Zepp Coach Premium and race prediction come with their own footnotes; shares data with listed Amazfit watches; no multi-band GNSS | Amazfit US Helio Ring page, sports features |
| App | Zepp app | Amazfit US Helio Ring page |
| Subscription / data access | Amazfit's headline: no subscriptions required, and “Zepp Aura Premium is totally free for Amazfit Helio Ring users.” Footnote 3: readiness insights require a Zepp Aura subscription. Footnote 4: Aura and Fitness memberships are offered for Zepp accounts in listed countries, including the United States, and aren't medical advice | Amazfit US Helio Ring page |
| Phone platforms | Android 7.0 or later; iOS 14.0 or later | Amazfit US Helio Ring page, supported devices |
| Wireless | Bluetooth Low Energy; the electronic manual (model A2321) lists Bluetooth V5.0 | Amazfit US Helio Ring page; Helio Ring electronic manual |
| US price | $149.99 on 19 September 2026 | Amazfit US store |
| Price band | Budget Zepp ring | Amazfit US store |
| Availability | On sale at Amazfit's US store for $149.99 on 19 September 2026, in sizes 8, 10 and 12 | Amazfit US store |
Amazfit Helio Ring extras
Specs only this model has.
| Spec | Value | Source and notes |
|---|---|---|
| Zepp Aura | Amazfit says Aura Premium is free for Helio owners (custom sleep sounds, weekly and monthly sleep reports, an AI chatbot). Footnote 3: readiness insights require an Aura subscription. Footnote 4: Aura is offered in listed countries, including the US | Amazfit US Helio Ring page, 19 September 2026 |
| Intended use | Footnote 7: Helio and the Zepp app are not medical devices, can't be used for medical purposes or as a basis for diagnosis, and their results are for reference only | Amazfit US Helio Ring page |
| In the box | Ring, wireless charger, instruction manual. No USB-C cable | Amazfit US Helio Ring packing list and FAQ |
| Battery test settings | Footnote 9: heart rate every 10 minutes, stress every 10 minutes, assisted sleep on, sleep breathing quality off, SpO2 off | Amazfit US Helio Ring page |
| Watch data sharing | Listed watches from Amazfit's Performance, Adventure, Lifestyle and Essential ranges, plus Zepp watches, can share data with Helio in Zepp | Amazfit US Helio Ring page, data fusion list |
| Amazfit's product page | Amazfit's US store listed Helio Ring at $149.99 in sizes 8, 10 and 12 on 19 September 2026. The same address sometimes shows Amazfit's Helio System watch promotion instead of the ring; the ring's own product section has the price and sizes | Amazfit US store, 19 September 2026 |
Three sizes, and that’s it
Helio comes in US sizes 8, 10 and 12, for fingers about 60.3, 66 and 71.3mm around. There are no half sizes or other options, so check the chart before anything else. The ring itself is 8mm wide and 2.6mm thick, with a titanium-alloy outside, a resin inner ring and one titanium finish. Weight rises slightly with size, starting at 3.65 grams for size 8.
Battery and charging
Amazfit rates Helio for up to 4 days of typical use. Battery capacity grows with the ring, from 16.5 mAh in size 8 to 18.5 in size 10 and 20.5 in size 12. Charging is wireless and takes about 1 hour 40 minutes from empty, on the charger that comes in the box.
Sensors and workouts
The BioTracker PPG sensor uses one dual-color LED and two photodiodes for heart rate, alongside a temperature sensor, an EDA sensor, a 3-axis accelerometer and a 3-axis gyroscope.
Workout tracking is light: Amazfit lists 4 sports modes, and the ring has no multi-band GNSS. If you already wear an Amazfit watch, Zepp can combine its data with the ring’s.
The Zepp app and Aura
Amazfit’s pitch is no subscription: its headline says none is required and that Zepp Aura Premium, with custom sleep sounds, weekly and monthly sleep reports and an AI chatbot, is totally free for Helio owners. Footnote 3 on the same page says readiness insights require a Zepp Aura subscription, and footnote 4 says Aura and Fitness memberships are offered in a list of countries that includes the US. Put together, readiness insights depend on Zepp Aura, which Amazfit currently says Helio owners get free.
Price
Amazfit sold Helio for $149.99 on its US store on 19 September 2026. Stock can vary by size, so check before you buy.
Sources
- Amazon product listing — accessed 2026-09-20
- Amazfit US — Helio Ring — accessed 2026-09-19
- Amazfit — Helio Ring electronic manual (PDF) — accessed 2026-09-19
Frequently asked questions
Does the Helio Ring need a subscription?
No, according to Amazfit's headline, which also says Zepp Aura Premium is free for Helio owners. The fine print adds that readiness insights require a Zepp Aura subscription, so readiness is the one feature tied to Aura.
Does the Helio Ring work with an iPhone?
Yes. The Zepp app runs on iOS 14.0 or later and on Android 7.0 or later.
Can I wear the Helio Ring in a sauna?
No. Amazfit says to take it off for a hot shower or a sauna, even though it's rated to 10 ATM for swimming, showering and some high-speed water sports.
Which Amazfit watches can share data with it?
Listed models from Amazfit's Performance, Adventure, Lifestyle and Essential ranges, plus Zepp watches, can share data with Helio in the Zepp app.
Official product page: Amazfit Helio Ring. Specs: Amazfit Helio Ring specs.