A walkie-talkie can last for a long time with no problems. The batteries are usually rechargeable, and a person can recharged them while he is walking. Some walkie-talkies have multiple radios that are powered by different methods, including rechargeable lithium-ion batteries, nickel metal hydride, and zinc-air.
A walkie-talkie typically comes in two different variations. Some models have one receiver and one transmitter, while others have two receivers and one Walkie Talkies transmitter. One receiver can receive signals from a transmitter anywhere within its range. This means that a walkie-talkie can receive signals at a long distance. A single transmitter can broadcast in a wide area, as long as it is connected to a receiver. In other words, a walkie-talkie can be used to communicate with someone who is at a great distance. However, if the transmitter is moved, the receiver will lose contact with the transmitter, so if you move the transmitter away from the receiver, the device will no longer work.
Another variation is a two-way talkie, which has two transmitters and two receivers. This type of walkie-talkie is useful when someone needs to communicate with many people simultaneously.