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 forms it into a fully-fledged handheld radio ceiver. 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/ 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 to charge except your phone. 1 watt mit 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 not affect use Package Contents: 1 x KV4P-HT PCBA with CASE 1 x VHF SMA ANTENNA 1 x U-shaped OTG ADAPTOR(C female-C-C) 1 x Sticky gel pads Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.