The TALKABOUT T803 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. Skiing, hunting or at a music festival, the T803 has an IP54**** rating and a range of up to 35 miles* to keep you connected no matter where your adventures lead. *Mountain to valley: Up to 35 Miles *Open Water: Up to 6 miles *Neighborhood: Up to 2 miles *The range in real-life conditions canbe reduced from maximum range