kv4p HT is a homebrew VHF radio that makes your phone capable of voice and text communication completely off-grid with at least a Technician class amateur radio license. The radio simply plugs into the USB C port on your Android smartphone and transforms it into a fully-fledged handheld radio transceiver. It's small enough to fit in your pocket and take anywhere, and since it has no internal battery it's the perfect radio to put in a go-bag or your car's glove compartment. Crystal-clear 22kHz 8-bit ADC/DAC audio, with filters and squelch. Texting with notifications just like SMS - radio-based APRS messaging (not just location) with built-in 1200 baud modem. Scan through unlimited memories and groups. No battery means nothing to charge except your phone. 1 watt transmit can go miles yet sips your phone's battery. Accessibility options: live closed captions (on supported phones), turn off animations, sticky PTT with haptic feedback. Colour:black Material:PCB+Plastic Due to different batches, there may be differences in product appearance and printed text, which will not affect use Package Contents: 2 x KV4P-HT PCBA with CASE 2 x VHF SMA ANTENNA 2 x U-shaped OTG ADAPTOR(C female-C-C) 2 x Sticky gel pads