JAKCOM R4 Smart Ring New product as frequencies pulse high voltage 2000v lm3886 amplifier board rfid repeater nano hotspot
![JAKCOM R4 Smart Ring New product as frequencies pulse high voltage 2000v lm3886 amplifier board rfid repeater nano hotspot](http://ae01.alicdn.com/kf/H67179f39722c494597dd88994170afd3P/JAKCOM-R4-Smart-Ring-New-product-as-frequencies-pulse-high-voltage-2000v-lm3886-amplifier-board-rfid.jpg_350x350.jpg)
sku: 1005001316327311
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$29.90
Shipping from: China
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