Any backyard party or event can be completed with this wireless microphone system from JBL. It’s compatible with any external speaker that has a 1/4″ microphone input, such as the JBL PartyBox. Plug-and-play functionality means your voice comes through the speakers as soon as the receiver and mic are turned on. Two microphones allow your guests to sing karaoke solos or duets. JBL wireless mics come with easily replaceable AA batteries, so keep your groove on all night long.