The PWMA200 wireless PA system is perfect for events where you need to move around with your microphone and retain the same quality sound you expect from a wired amp. It comes with a wireless lavalier mic that operates at a distance up to 100 feet. The amp is compact and lightweight for easy portability. It runs on a rechargeable battery, so you don't need to keep buying new batteries - simply plug in with the included AC adaptor and charge. A DC 12~15V jack also allows you to run this speaker/amp on car power (adapter not included). Broadcast music and news with the built in FM radio. There's also a ¼" jack input to plug in a wired mic - also included with the PWMA200. The wireless mic required one 9V battery (not included).