Radio China - POCSTARS Android APP makes sure SOS can be accessed instantly and the user knows for sure about transmission status, i.e., whether the SOS is made successfully. His/her SOS alert
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APP Control Shortwave Radio,Portable Full Band FM VHF AM SW WB Receiver with Bluetooth 5.0 and SOS Alarm,Pocket Radio Rechargeable with Flashlight and Earphone Jack: Amazon.co.uk: Electronics & Photo
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