Customized NFC Ceramic Smart Ring | 13.56MHz (NTAG 213/MIFARE optional) + Bluetooth Health Tracking | Real-time monitoring of heart rate/blood oxygen/sleep/steps/calories. Made of zirconia ceramic, IP68 waterproof, and syncs data with the app. Supports laser engraving of custom logos, suitable for access control, health management, fitness tracking, brand membership interaction, and other scenarios.
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