
SY3 Smart Bracelet
Model SY3
- Exquisite jewelry-inspired bracelet with integrated health monitoring technology
- High-precision PPG sensor for heart rate and blood oxygen measurement
- Premium alloy construction with elegant plating and crystal accents
- Comprehensive sleep, stress, and activity tracking in a refined design
- IP68 waterproof with anti-tarnish coating for enduring brilliance
- Adjustable link design with secure deployment clasp for a perfect fit




Key Features
Core capabilities that set this device apart in the B2B health wearable market.
Refined Jewelry Aesthetic
Crafted with premium alloy, elegant plating, and crystal accents, the SY3 transitions seamlessly from boardroom to evening wear while quietly monitoring your health.
Integrated Health Sensor
High-precision PPG module discreetly embedded in the decorative centerpiece, delivering continuous heart rate, SpO₂, and sleep data without visible technology.
Stress & Wellness
HRV-based stress tracking with discreet vibration alerts for guided breathing sessions, promoting mindfulness and emotional balance throughout the day.
Activity & Sleep
Automatic step counting, calorie tracking, and comprehensive sleep stage analysis with personalized wellness recommendations via the companion app.
Anti-Tarnish Protection
Advanced PVD coating with anti-tarnish properties ensures the SY3 maintains its brilliant finish through daily wear, water exposure, and cosmetic contact.
Adjustable Perfect Fit
Link-based adjustable design with secure deployment clasp, accommodating wrist sizes from 14cm to 20cm for a comfortable, customized fit.
OEM/ODM Customization
Geyan Technology Innovation offers comprehensive white-label and customization services to help you launch your branded health wearable product quickly and efficiently.
Brand Customization
Custom logo, color options, packaging design, and user manual — fully tailored to your brand identity.
White-Label App
Branded iOS and Android companion apps with your logo, UI theme, and cloud data platform integration.
Firmware & SDK
Custom firmware development, API/SDK integration, and OTA update infrastructure for your ecosystem.
Algorithm Licensing
Proprietary health algorithms available for licensing — sleep, HRV, ECG, blood pressure, and more.
Certification Support
Documentation and testing support for CE, FCC, RoHS, REACH, and FDA 510(k) pre-assessment.
Flexible MOQ
Low minimum order quantities for pilot runs, with scalable mass production up to 50,000+ units/month.
Clinical Applications
Smart bracelet technology enables continuous, non-invasive health monitoring across multiple clinical domains.
- Sleep Medicine — Continuous overnight SpO₂, heart rate variability, and body temperature tracking for sleep quality assessment and sleep apnea screening support.
- Cardiology — Long-term HRV trend analysis and resting heart rate monitoring for cardiovascular risk stratification. ECG-enabled models support arrhythmia detection.
- Women’s Health — Skin temperature variation and RHR pattern recognition for menstrual cycle tracking and fertility window estimation.
- Chronic Disease Management — Continuous monitoring for hypertension, diabetes, and metabolic syndrome patients requiring long-term vital sign tracking.
Sizing & Comfort
Designed for 24/7 wear with precision fit and ultra-lightweight materials.
- Multiple Sizes Available — US ring sizes 6-12, with a complimentary sizing kit provided for OEM/ODM clients to ensure users find their perfect fit.
- Ultra-Lightweight Design — Weighing only 4-6g, significantly lighter than traditional smartwatches, enabling comfortable overnight and all-day wear without finger fatigue.
- Premium Materials — Titanium alloy or stainless steel shell options with medical-grade epoxy resin inner body, hypoallergenic and skin-safe for prolonged contact.
- Ergonomic Profile — Slim 8mm band width with smooth inner curvature, designed to fit comfortably between fingers without interfering with daily activities.
- Waterproof Design — IP68 / 5ATM rated, suitable for hand washing, showering, and swimming without removal.
Specifications
| CPU | Nordic 54L15 (RAM 256KB, ROM 1.5MB) |
| PPG | Jufei RA3220 x 2, 50Hz sampling rate |
| G-Sensor | MiraMEMS DA267 |
| Bluetooth | BLE 6.0 |
| Battery | 24-32mAh, charging case included |
| Charging Time | ~1 hour |
| Working Time | 5-7 days (connected) |
| Waterproof | IP68 |
| Ring Width | 8mm |
| Weight | ~18g |
| Shell | Titanium alloy outer + Epoxy resin inner body |
| App | H Ring |
| Compatibility | iOS 13+ / Android 8.0+ / HarmonyOS (below 5.0) |
| App Languages | 36 languages |
| Form Factor | Bracelet with integrated sensor |