Cross-Border Fast Ship
SR08 Stainless Steel Smart Ring Heart Rate & Sleep Tracker
- Continuous PPG
- SpO2 Tracking
- Gesture Control
- IP68 Water
Enterprise Product Portfolio
High-Accuracy Photoplethysmography Smart Rings
Built on ultra-low-power Nordic nRF52/nRF53 architectures, medical epoxy inner resins, and aerospace-grade outer shells. Standardized white-label platforms ready for custom tooling, branding, and SDK integration.
Medical Baseline
Medical-Grade Heart Rate SpO2 Activity Health Smart Ring
- Red + Green Dual PPG
- Circadian Sleep Score
- Hypoallergenic Resin
AI Health Engine
Stainless Steel Smart Fitness Ring with AI Health Analysis
- On-Chip AI Insights
- Heart Rate Trend
- App SDK Ready
Thermal Array
JLM Precision Temperature Sensing Stainless Steel Ring Band
- NTC Skin Thermistor
- Fever & Mood Tracking
- Jewelry Finish
Clinical Grade ECG
ECG + EDA IP69 Smart Ring Fitness & Heart Rate Tracker
- Lead-I Micro ECG
- Electrodermal EDA
- IP69 Deep Water
HRV Analytics
Custom OEM Brushed Smart Ring HRV Heart Rate & SpO2
- HRV & Autonomic Index
- Brushed Metallic Finish
- White-Label SDK
Ultra-Slim Form
Men's IP68 Thin Stainless Steel Heart Rate Fitness Ring
- 2.6mm Ultra-Thin Shell
- Magnetic Pin Charge
- Capacitive Touch
Titanium Hybrid
4mm Titanium Carbon Fiber Biometric Housing Wedding Band
- Zirconium Carbon Inlay
- Gold Titanium Armor
- Jewelry Integration
15+ Yrs
Hardware Manufacturing Since 2008
2M+ Units
Annual Certified Manufacturing Capacity
8 Lines
High-Speed Precision SMT Lines
500+
Global B2B Partners in 30+ Countries
Enterprise Advantage
Why Tier-1 Brands Select Our Smart Ring SMT Foundry
Direct ownership of production lines eliminates middleman markups, secures intellectual property, and guarantees repeatability across high-volume production batches.
In-House 8 SMT Production Lines
Unlike trading entities, we own and manage 8 precision SMT lines in Shenzhen. This enables microminiature 01005 component mounting, curved FPCB high-density routing, and rigid yield control down to 99.4% first-pass pass rate.
ISO9001, CE, FCC & RoHS Certified
Full regulatory dossier available upfront. Every ring production cycle follows ISO9001:2015 traceability. Materials meet strict biocompatibility standards (ISO 10993 cytotoxicity and sensitization) ensuring safe long-term epidermal contact.
Turnkey Firmware & SDK Architecture
We provide full-stack Native iOS and Android SDKs, Bluetooth Low Energy (BLE 5.3) GATT protocols, raw photoplethysmogram signal access, and white-label mobile app integration ready for immediate re-skinning.
Agile B2B Sourcing: Low MOQ & Fast Prototypes
Accelerate your product launch with low entry barrier (MOQ from 200 pcs). Functional sample dispatch delivered within 7 business days, followed by dependable 15–25 day bulk production turnarounds.
Technical Whitepaper
Engineering Sub-3mm Photoplethysmography: Hardware Architecture
A comprehensive engineering review of biometric sensor placement, battery optimization, and digital signal processing on finger-worn micro-peripherals.
1. The Biometric Precision Edge: Palmar Arterioles vs. Radial Wrist Capillaries
In the evolving consumer wearable landscape, the transition from wristbands to smart rings represents a quantum leap in physiological signal capture. The radial and ulnar arteries of the wrist are surrounded by dense connective tissue, tendons, and superficial bone structures that scatter optical signals. Moreover, wrist movements induce severe motion artifacts (MA) due to muscle expansion and wrist flexion.
In contrast, the digital arteries running along the lateral and medial aspects of the human finger are significantly closer to the epidermis (0.8mm to 1.5mm subcutaneous depth). Because arterial blood volume changes are significantly pronounced in the finger’s dense microvascular bed, an OEM/ODM heart rate monitoring ring captures higher Signal-to-Noise Ratio (SNR) PPG pulses compared to wristwatches. Our optical modules deploy dual-wavelength (525nm green for dynamic heart rate; 660nm red and 940nm infrared for peripheral capillary oxygen saturation SpO2) paired with high-transimpedance amplifier (TIA) front-ends to capture clinical pulse wave contours (PWC).
Engineering Benchmark: Motion Artifact Cancellation
Our custom hardware integrates ultra-low-noise 3-axis MEMS accelerometers coupled with an adaptive Recursive Least Squares (RLS) adaptive filter running on the Nordic ARM Cortex-M4 MCU. Optical noise generated during ambulatory motion or athletic exertion is dynamically canceled, maintaining beat-to-beat (R-R interval) accuracy within ±2 bpm compared to a clinical 12-lead Holter monitor.
2. Miniaturization Challenges: Flexible SMT, Curvature Encapsulation & Thermal Management
Packing a Bluetooth Low Energy System-on-Chip (SoC), dual optical emitters, photodiode receivers, charge-management ICs (PMIC), and a custom lithium polymer cell into an annular band measuring under 2.8mm in thickness poses complex manufacturing challenges. Shenzhen Tucks Technology Co., Ltd. resolves these constraints through three patented fabrication phases:
A. 6-Layer Ultra-Thin Rigid-Flex PCB (FPCB): We utilize polyimide substrates with high bend-cycle tolerances, accommodating a 360-degree curvature radius down to 7.5mm without micro-fracturing trace interconnects. SMT components as compact as 01005 passives and WLCSP (Wafer Level Chip Scale Packages) are mounted on calibrated vacuum reflow lines.
B. Vacuum Liquid Injection Molding: To achieve true IP68 and 5ATM water resistance, internal electronics are encapsulated using medical-grade, non-allergenic, optically transparent epoxy resins. Zero micro-bubbles are tolerated, preventing optical refraction issues on the optical sensor array.
C. Ceramic and Aerospace Titanium Alloy Outer Armor: The exterior chassis is forged from Grade 5 Titanium (Ti-6Al-4V) or micro-crystalline zirconia ceramics (ZrO2). This ensures extreme scratch resistance, high tensile strength, and radio-frequency (RF) transparency for omnidirectional 2.4GHz BLE antenna propagation.
3. Micro-Power Management & Battery Chemistry Life-Cycles
Space limitations restrict battery volume to custom-shaped curved li-ion cells ranging from 15mAh to 22mAh. Delivering 5 to 7 days of continuous heart rate, SpO2, and sleep tracking requires granular power domain segmentation. In sleep monitoring mode, our proprietary micro-firmware executes a duty-cycle algorithmic sleep engine: the SoC drops to sub-1.5µA deep-sleep, waking periodically to sample PPG bursts and calculate Heart Rate Variability (HRV) metrics (SDNN, RMSSD, and autonomic balance index) without draining battery reserves.
| Hardware Specification | Standard Commercial Grade | Tucks OEM/ODM Medical-Ready Tier |
|---|---|---|
| MCU & BLE Architecture | Generic 32-bit RISC Core | Nordic Semi nRF52840 / nRF5340 Dual-Core ARM |
| Optical PPG Sensor Array | Single Green LED (Unfiltered) | Multi-Spectral (Green, Red, IR) + Dual Silicon Photodiodes |
| Biocompatibility Compliance | Basic ABS Plastic / Nickel Plated | Medical Hypoallergenic Resin + ISO 10993 Certification |
| Waterproof Rating | IPX5 Splash Proof | IP68 & 5ATM (Liquid Resin Integrated Seal) |
| Battery Autonomy (Continuous) | 1 - 2 Days Run Time | 5 - 7 Days (Ultra-Low Leakage PMIC < 850nA) |
| Data API & SDK Architecture | Closed Proprietary Server | Raw PPG Data, BLE GATT Open Profile, Custom REST API |
Strategic Forecasting
Future Sourcing & Procurement Trends (2025–2030)
Market intelligence for wearable category managers, consumer electronic distributors, and healthcare tech brands preparing future product roadmaps.
Convergence of Continuous Blood Pressure (CBP)
Procurement teams are shifting away from standalone fitness trackers toward cuffless continuous blood pressure estimation. By synchronizing high-speed PPG pulse wave transit time (PWTT) with skin temperature micro-sensors, our upcoming ring chassis delivers reliable arterial stiffness and vascular risk indexing directly to telemedicine platforms.
Secure NFC Payment & Zero-Trust Access Tokens
Smart rings are replacing smartcards and contactless tokens. Sourcing pipelines are actively demanding dual-interface architectures incorporating secure element (SE) chips certified by EMVCo for contactless Visa/Mastercard payments, alongside FIDO2 biometric authentication for automotive smart-entry and enterprise workstations.
On-Device TinyML & Autonomous Health Agents
The next-generation smart ring will process predictive biological algorithms on-edge rather than piping continuous raw data to cloud servers. Machine learning models compressed via micro-quantization will recognize early cardiac arrhythmia, sleep apnea episodes, and metabolic burnout directly within the ring's ARM Cortex architecture.
Procurement Intelligence
Frequently Asked Questions for B2B Smart Ring Buyers
Detailed technical, regulatory, and production answers addressing the key risk-factors of smart ring OEM procurement.
What is the standard Minimum Order Quantity (MOQ) and production lead time? +
Our standard MOQ for white-label OEM smart rings starts at 200 units across standard ring size distributions (Sizes 6 through 13). Functional golden-sample prototypes with custom laser logo engraving, custom BLE broadcast name, and localized mobile app pairing are dispatched within 7 business days. Full mass-production runs typically take 15 to 25 business days following formal sign-off of your Pre-Production Approval (PPA).
How does your factory ensure ring waterproofing and sensor reliability? +
Every single unit undergoes automated multi-chamber differential pressure testing (equivalent to 5ATM / 50 meters depth) prior to and after chemical resin injection. In addition, optical sensors are calibrated across simulated pulse machines to normalize photodiode sensitivities, ensuring variance remains under ±1.5% across production batches.
Can we access raw photoplethysmography (PPG) data for medical research algorithms? +
Yes. For clinical research institutions, insurance providers, and digital health platforms, we offer custom firmware profiles that stream uncompressed raw AC/DC PPG values, raw 3-axis accelerometer output (up to 100Hz), and micro-temperature logs via BLE GATT services. Complete Android and iOS SDK documentation, sample code, and wrapper libraries are provided under NDA.
What scope of customization is supported under OEM vs. ODM programs? +
Our OEM program covers outer shell materials (Stainless Steel 316L, Titanium Ti-6Al-4V, Zirconia Ceramic, Carbon Fiber inlays), PVD physical vapor deposition coating colors (Obsidian Black, Rose Gold, Silver, Champagne), custom ring charging cases, bespoke packaging, and white-label companion mobile applications. Our ODM service encompasses full custom industrial design (ID), mechanical tooling (MD), specialized FPCB circuit re-engineering, and bespoke firmware architecture.
How is finger sizing managed across international consumer markets? +
We provide complete white-label plastic ring sizing kits (sizes 6 to 13 US standard) with your corporate branding. We advise establishing a dual-touchpoint order fulfillment pipeline: ship the low-cost sizing kit first to prospective consumers, followed by direct warehouse fulfillment of the verified ring SKU. Standard size split recommendations based on our 500+ global partner deployments are provided upon contract initialization.
Ready to Scale Your Smart Ring Line?
Partner with an Established Wearables Foundry
Tap into 15+ years of electronic engineering expertise, 8 in-house SMT lines, and comprehensive white-label SDK architecture. Request our complete wholesale price matrix, master BOM options, and physical sizing sample kits today.