The TALKABOUT T800 series allows you to share and track locations with your travel companions. No cell service, no problem. Just download the APP, connect your smartphone via Bluetooth and you now have the ability to locate a friend's campsite, share your location and send messages- all while exploring off-grid. You can PTT and control your radio setting from the TALKABOUT app. To easily communicate your exact location to other FRS users without the app, you can use the provided what3words addresses.