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R4 Smart Ring Health Fitness NFC Waterproof Ring Smart
2025-04-13
introduction 3730
R4
Bluetooth Bracelet
Class A
Communication
Plastic
Bluetooth
Smart Card
Contact Type
Passive
Read-Write Card
Market
Active Card
High Frequency
Serial
Support
Support
Accept
100PCS
MB
Cartton Box
5.8cm * 5.8cm * 4.5cm
China
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