CONQUEST S18 9000mAh Battery IP68 Rugged Waterproof Phone Global 4G IoT DMR Intercom SmartPhone cell Phone About Poc and DMR version： PoC Version(without antenna)： Support PoC intercom，don’t support DMR . PoC intercom via App, it work must with cellular network. DMR Version（with removable antenna）：Both support PoC and DMR digital intercom. DMR intercom no need cellular network,i ntercom range is barrier-free 3-5km.
