The SY02 is a smart ring with a carbon fibre pattern finish in stainless steel with glue pouring process construction. Weight: approximately 3.2g. Thickness: 2.7mm. Sizes: #7 (17.4mm inner diameter) through #13 (22.3mm). Bluetooth: 5.0. Waterproof rating: IP68 and 5ATM (greater than 50m). Chipset: PAR2860. G-sensor: SC7A20H. Heart rate sensor: HX3918. Memory: 512KB ROM, 32KB RAM. Ring battery: 16mAh. Battery life: approximately 4–5 days normal use, approximately 16–20 days standby. Case battery: 200mAh. Charge time: approximately 1 hour. Battery type: polymer pure cobalt. Operating temperature: 0–50°C. App: RWFIT. GPS: app-based (mobile phone GPS). Certifications: CE, CE-RoHS. Colour: not specified by name in source (ColorStyle S). Package: ring, charging case, charging cable, and English user manual. Curated by Aetheo.
Why you'll like it
- IP68 and 5ATM waterproofing — rated for water submersion to greater than 50m
- Heart rate, blood oxygen, and sleep tracking via RWFIT app
- 3.2g, 2.7mm thick — stainless steel with carbon fibre pattern finish
- Bluetooth 5.0 — PAR2860 chipset with HX3918 heart rate sensor
- 4–5 days normal use — 200mAh charging case with cable included
Designed for everyday health and activity tracking
The SY02 connects to the RWFIT app via Bluetooth 5.0 to display health and activity data collected by the ring's sensors. Heart rate is tracked using the HX3918 optical sensor — the app records dynamic heart rate trends and history. Blood oxygen saturation (SpO2) data is recorded and available as a 7-day history in the app. Sleep monitoring records sleep statistics, generates a sleep score, and provides sleep analysis via the RWFIT app. The ring tracks data through wear; the app provides the display, history, and reporting interface. GPS is app-based — the ring uses the paired phone's GPS rather than a built-in GPS module. The SY02 is waterproofed to IP68 and 5ATM standards, rated for submersion to greater than 50m — suitable for swimming and water activities at these depths. The ring weighs approximately 3.2g and is 2.7mm thick, available in sizes #7 through #13. The 16mAh ring battery provides approximately 4–5 days of normal use or approximately 16–20 days of standby. The 200mAh charging case recharges the ring in approximately 1 hour; a charging cable is included in the package. Certifications: CE and CE-RoHS. Curated by Aetheo.
Key features
Health and activity tracking — heart rate, blood oxygen, sleep via RWFIT
The SY02 records heart rate using the HX3918 optical sensor — RWFIT displays dynamic heart rate trends and historical data. Blood oxygen saturation is monitored and stored as a 7-day record in the app. Sleep tracking records sleep duration and structure, calculates a sleep score, and provides sleep analysis in the RWFIT app. The ring also supports call alerts (white flash), message notifications (blue blink), and social software notifications. Gesture control enables scrolling social apps and remote photo capture via paired phone. All health monitoring data is displayed through the RWFIT app on a paired smartphone; the ring itself is a sensor and display device only. Health tracking features record and display data — they do not diagnose, treat, or replace medical devices or professional medical advice.
IP68 and 5ATM waterproofing — stainless steel with carbon fibre pattern — 3.2g
The SY02 carries IP68 and 5ATM waterproof ratings, specified in source as rated for submersion to greater than 50m. The stainless steel body uses a glue pouring process with a carbon fibre pattern finish. Weight is approximately 3.2g and thickness is 2.7mm — designed to be worn continuously. Sizes are available from #7 (17.4mm inner diameter) to #13 (22.3mm inner diameter). Operating temperature range is 0–50°C. Battery type is polymer pure cobalt with a 16mAh capacity. Chipset is PAR2860 with 512KB ROM and 32KB RAM; the G-sensor is SC7A20H.
Bluetooth 5.0 — RWFIT app — 200mAh charging case
Bluetooth 5.0 connects the SY02 to paired smartphones for data sync and notifications. The RWFIT app is the companion application for all data display, health tracking history, and ring configuration. GPS function in source is listed as mobile app GPS — the ring uses the paired phone's GPS capability rather than a built-in GPS module. The 16mAh ring battery provides approximately 4–5 days of normal use per charge or approximately 16–20 days of standby. The 200mAh charging case recharges the ring in approximately 1 hour; the included charging cable connects the case for charging. Colour is not specified by name in source documentation (ColorStyle S).
Best for
- Continuous health monitoring — heart rate, blood oxygen, sleep tracking via RWFIT
- Water activities — IP68 and 5ATM, rated to greater than 50m
- Lightweight all-day wear — app
| Specification | Details |
|---|---|
| Model | SY02 |
| Material | Stainless steel with glue pouring process (carbon fibre pattern finish) |
| Bluetooth Version | 5.0 |
| Chipset | PAR2860 |
| G-Sensor | SC7A20H |
| Heart Rate Sensor | HX3918 |
| Memory | 512KB ROM + 32KB RAM |
| Ring Battery | 16mAh (polymer pure cobalt) |
| Battery Life (normal use) | Approx. 4–5 days |
| Battery Life (standby) | Approx. 16–20 days |
| Charge Time (ring from case) | Approx. 1 hour |
| Case Battery | 200mAh |
| Weight | Approx. 3.2g |
| Thickness | 2.7mm |
| Sizes | #7 (17.4mm) – #13 (22.3mm) inner diameter |
| Waterproof Rating | IP68 + 5ATM (>50m) |
| Operating Temperature | 0–50°C |
| Companion App | RWFIT |
| GPS | App-based (phone GPS) |
| Health Tracking | Heart rate, blood oxygen (SpO2), sleep monitoring |
| Notifications | Call alert (white flash), message (blue blink), social software notifications |
| Gesture Control | Scroll social apps, remote photo capture |
| Colour | Not specified in source (ColorStyle S) |
| Certifications | CE, CE-RoHS |
| Included | Ring, charging case (200mAh), charging cable, English user manual |
