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On the left is the Retevis RB21 which I will do a review on this week :) what are you using ?? : r/Network_Radio
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Retevis RB21 4G Poc WiFi Android 7.1 PTT Zello Network Two Way Radio
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Zello-Radio bidireccional de red 4G Retevis RB21, receptor de Radio con Android 7,1, GPS, WIFI, POC, USB, Sim Dual, compatible con Bluetooth, HT _ - AliExpress Mobile
Zello-Radio bidireccional de red 4G Retevis RB21, receptor de Radio con Android 7,1, GPS, WIFI, POC, USB, Sim Dual, compatible con Bluetooth, HT _ - AliExpress Mobile
