With these emergency radios, you receive important information about the weather, evacuations, or emergency services during emergencies. The radios work on a battery, so you can also use them when there's no power. If you choose a radio with a crank handle, you can wind it up and even use it when the battery is empty. When the radio has a built-in light, you can use it for emergency signals. That way, it's easier for emergency services to find you.