GPS + I/O Audio F.M + Transmitter cAPE: It's a GPS receiver, F.M transmitter, input and output audio interface.
You can hear sound from your speaker or headphone using the jack, and also if you want to listen to that sound on the radio , you can do it with a range of about 20 feet.
Additionally, incorporates a GPS module with low power consumption, on-board antenna and high sensitivity.