JAKCOM R4 Smart Ring New product as 4g development board rfid read write bird microchips diy electronic ring dual door logo em
![JAKCOM R4 Smart Ring New product as 4g development board rfid read write bird microchips diy electronic ring dual door logo em](http://ae01.alicdn.com/kf/Hd17610dc04954dc2a566888389945fa2l/JAKCOM-R4-Smart-Ring-New-product-as-4g-development-board-rfid-read-write-bird-microchips-diy.jpg_350x350.jpg)
sku: 4001363731533
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$29.90
Shipping from: China
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