Key Features BaoFeng BF-888S frequency range: 400-470MHz; 16 channel; 50 ctcss/105 cdcss Power-saving Features to extend battery life; low battery alarm advises you when to recharge or replace the batteries. This 2 Walkie talkie is helpful for these circumstances: security Guard, supermarket connection, construction area indication, most helpful for field survival, biking and hiking. This piece of BaoFeng two-way radio can connect to each other in remote area or wild field, where shell phone signal is poor. You can find you partner in distance of handshake to 2 kilometers. With latest tech applied, it is very easy to use these. All you need is turn these two to the same channel(16 channel to be chosen), push a button, and you can hear from your mate.