Before you buy Amazfit Helio Strap
A $99.99 screen-free strap from Amazfit, compared with Ray's light-powered band.
The Amazfit Helio Strap is a screen-free recovery band that works with Amazfit's Zepp app and pairs with Amazfit watches. At $99.99 it costs less than Ray, though it was listed as sold out when we checked. It charges by cable and lasts up to 10 days. Ray is also screen-free, needs no subscription and powers itself from light.
The short answer
Choose the Helio Strap if you already use an Amazfit watch or want the lowest-cost screen-free band. Choose Ray if you'd rather skip cable charging and want a band you can wear as jewelry.
Amazfit Helio Strap status: Listed, currently out of stock.
Side by side
Specs are manufacturer claims and US pricing snapshots, not lab-test results. A blank promise is less useful than a clear tradeoff, so we keep this list deliberately practical.
| What changes | Chargerless Ray | Amazfit Helio Strap |
|---|---|---|
| Format | Screen-free wristband | Screen-free fitness band |
| Power | Light powered; no charging routine | Rechargeable; up to 10 days |
| Screen | None | None |
| US price | $219 silver / $249 gold | $99.99 |
| Required subscription | None | None for core features |
| Core tracking | Sleep, heart rate, HRV, temperature, steps and light exposure | Sleep, recovery, exertion, HR and HRV |
Still weighing fitness trackers? Read what to look for in a tracker you'll want to wear every day.
Neither wins every category
The best tracker is the one whose compromises fit your life—and that you will actually keep wearing.
Why choose Ray
Ray replaces periodic cable charging with light and offers jewelry-style bands.
Why choose Amazfit Helio Strap
Helio Strap costs less and pairs neatly with Amazfit watches.
Research note. Competitor facts were checked against Amazfit Helio Strap product page on August 20, 2026. Prices, promotions, regional features and announced-product timelines can change. Ray details reflect the current Chargerless product page. Neither product is a substitute for medical care.
Wear your health. Not a charger. Ray tracks the essentials in a 7-gram bracelet powered by light. Silver starts at $219. Gold starts at $249. No required subscription.
See Ray options Browse all 38 comparisons