| General | |
|---|---|
| Manufacturer | Amazfit (Zepp Health) |
| Type | Smart ring for recovery and sleep tracking |
| Series | Helio |
| Released | 2024 |
| Price at launch | GBP 269 |
| Predecessor | None (first Helio Ring) |
| Successor | Helio Ring 2, confirmed for H2 2026. |
| Sizes | Size 8, 10 and 12 |
| Colours | Titanium |
Specifications and features as at launch.
Jump to: Expert opinion | Specifications | Battery life | Features | Data fusion | Further reading
Expert opinion
The Helio Ring is a sleep and recovery tracker aimed at athletes who already own an Amazfit watch and do not want to wear it overnight. It reads heart rate, blood-oxygen, stress and skin temperature from the finger, and adds an EDA sensor for emotional state tracking. There is no subscription requirement for the core metrics, which separates it from Whoop.
The ring is titanium, under 4g, and 2.6mm thin, so it is comfortable to sleep in. Its readiness score merges with data from a paired Amazfit watch. Battery life of up to four days is short by smart ring standards, and early buyers reported occasional connection drops that require a factory reset. The ring is a companion device, not a standalone tracker, and its value depends on already being inside the Zepp ecosystem.
Specifications
| Physical | |
|---|---|
| Width | 8mm |
| Thickness | 2.6mm |
| Weight | Size 8: 3.65g. Size 10: 3.75g. Size 12: 3.82g |
| Sizes | 8, 10, 12 |
| Body material | Titanium alloy outer ring, resin inner ring |
| Water rating | 10 ATM (ISO 22810) |
| Sensors | |
| Heart rate | BioTracker PPG (1 dual-colour LED + 2PD) |
| Other sensors | Temperature, EDA (electrodermal activity), 3-axis acceleration, 3-axis gyroscope |
| Connectivity and support | |
| Connectivity | Bluetooth Low Energy |
| Supported devices | Android 7.0 and above, iOS 14.0 and above |
| Application | Zepp App |
Battery life
| Item | Figure |
|---|---|
| Typical use | Up to 4 days |
| Battery capacity | Size 8: 16.5 mAh. Size 10: 18.5 mAh. Size 12: 20.5 mAh |
| Charging | Wireless, approximately 1 hour 40 minutes |
The four-day figure is based on heart rate and stress monitoring at 10-minute intervals, assisted sleep monitoring on, and blood-oxygen and sleep breathing quality off. Enabling continuous blood-oxygen or automatic emotion monitoring shortens battery life.
Features
Recovery and health
- Readiness score, merging ring and paired-watch data
- Recovery time
- Sleep score, sleep stages including REM, daytime naps, sleep breathing quality
- Sleep resting heart rate and sleep HRV
- Continuous heart rate, blood-oxygen and stress monitoring
- EDA emotion monitoring, combined with HRV
- Skin temperature
- PAI health assessment
- Heart rate recovery
- Menstrual cycle tracking
Training
- Four sports modes
- VO2 Max, training load and training effect
- Race predictions for 3km, two-mile, three-mile, 10km, half marathon and marathon
- Zepp Fitness and Zepp Aura memberships, free for Helio Ring users on a trial, extended by subscription in select regions
Connect
- Sync to Strava, adidas Running, Komoot, Relive, Google Fit, Apple Health
- Wireless charging
Data fusion
The Helio Ring merges its recovery data with a paired Amazfit watch, so readiness draws on both devices. Amazfit lists data fusion support across the Performance, Adventure, Lifestyle, Essential and Zepp watch series, including the Cheetah Pro, T-Rex Ultra, T-Rex 2, T-Rex Pro, T-Rex, Balance, Active, Falcon, and the GTR and GTS ranges, alongside Bip models and Zepp Z and E. The ring works as a background tracker while the watch handles workouts, with all data presented together in the Zepp App.
