3. Hardware System Design

VitaWatch is a high-precision, low-power smart watch designed to provide comprehensive health management, encrypted payments, and intelligent assistant services by integrating advanced sensors, AI chips, encrypted payment modules, and privacy protection solutions. Its hardware system combines the latest sensor technologies with on-device computing capabilities, aiming to deliver real-time health monitoring, data privacy protection, and personalized AI services.

3.1 VitaWatch Technical Architecture

VitaWatch is a smart watch that integrates the latest sensor and artificial intelligence technologies, enabling real-time health monitoring and personalized health recommendations for users. The device incorporates multiple advanced solutions to ensure the efficiency and accuracy of data collection, processing, and secure transmission.

3.1.1 Sensor Integration

VitaWatch is equipped with a variety of advanced sensors to accurately monitor users' physiological and movement data. The core sensors include:

• Photoplethysmography (PPG) Sensor: Enables real-time monitoring of heart rate and blood oxygen levels with medical-grade accuracy (error <3%), providing precise data in various environments.

• Electrocardiogram (ECG) Sensor: Offers ECG monitoring to help detect potential heart abnormalities and provide early warnings for cardiovascular conditions.

• Three-Axis Accelerometer: Tracks user movement, step count, activity intensity, and posture, analyzing daily activities and workout effectiveness.

• Electrodermal Activity (EDA) Sensor: Measures emotional responses and stress levels, helping users understand mood fluctuations and make informed health adjustments.

• Temperature Sensor: Continuously monitors body and skin temperature, providing trend analysis and integrating with activity data for more accurate health insights.

3.1.2 AI Chip & On-Device Processing Capability

VitaWatch is equipped with a high-efficiency AI chip capable of processing collected health data locally in real time, reducing reliance on cloud computing. This design significantly enhances data processing speed and privacy, allowing the device to generate personalized health recommendations on-device without transmitting sensitive data to remote servers.

• Edge Computing Capability: The AI chip in VitaWatch enables real-time analysis of health data directly on the device, providing instant feedback and recommendations. Users can receive personalized health guidance without waiting for cloud-based processing.

• Low-Power Computing: With an optimized hardware acceleration design, VitaWatch operates with low power consumption while being worn for extended periods, ensuring continuous 24/7 monitoring.

3.1.3 Data Privacy & Encrypted Payment Module

VitaWatch is equipped with a built-in Secure Element (SE) hardware encryption module to ensure the security of all payments and sensitive data. By integrating multi-chain encrypted payment protocols, users can seamlessly conduct crypto asset transfers, payments, and identity verification directly on the device.

• Encrypted Payment Functionality: Supports NFC and QR code payment methods, enabling crypto payments across multiple platforms and wallets. The Secure Element hardware module safeguards private keys, ensuring transaction privacy and security.

• Hardware-Level Encryption: All user data is encrypted using AES-256 and is securely processed on-device before being uploaded to the blockchain, ensuring privacy throughout the data transmission process.

3.1.4 Data Encryption

VitaWatch features a dual-storage architecture: high-speed cache storage and encrypted storage. All sensitive user data is encrypted on-device, ensuring both privacy and security.

• Local Data Encryption: Utilizing advanced encryption algorithms, users’ health data, payment records, and personal information are securely encrypted at the device level, preventing unauthorized access even if the device is lost or stolen.

• Data Transmission & Storage: Encrypted data is transmitted via secure communication protocols (e.g., SSL/TLS) to a decentralized storage network, ensuring security during data transfer.

3.1.5 Modular Design & Scalability

VitaWatch adopts a modular hardware structure, allowing for future feature expansions and customization. The device not only supports standard health monitoring but also enables users to enhance functionality by swapping watchbands or attaching additional sensor modules.

• Expandable Watchbands: Users can choose watchbands equipped with blood pressure monitoring, UV sensors, or environmental sensing modules to meet specific health monitoring needs.

• Hardware Interface: The VitaWatch mainboard includes expansion interfaces, supporting future hardware upgrades such as UWB positioning, AI-assisted recognition, and other advanced applications.

3.2 Overview of VitaWatch's Key Hardware Features

• Comprehensive Health Monitoring: With integrated sensors, VitaWatch can track various physiological data, including heart rate, blood oxygen levels, step count, activity intensity, sleep quality, body temperature, and emotional state. It generates real-time health reports and provides personalized recommendations.

• Real-Time AI Health Analysis: Powered by its built-in AI chip, VitaWatch analyzes real-time data to offer personalized health management suggestions, such as exercise optimization, nutrition advice, and sleep improvement plans, helping users achieve better health management.

• Privacy Protection & Data Security: All health data is encrypted on-device and managed through decentralized storage, ensuring both privacy and security. Users have full control over data authorization and sharing and can earn rewards based on their contributions.

Encrypted Payment Functionality: VitaWatch supports on-chain asset management and encrypted payments, allowing users to conduct crypto payments and asset transfers directly from the watch while ensuring transaction security.