Sentry H0700 FM Hi-Fi Wireless Headphones and Transmitter with RCA cables.  User Manual included.  Transmitter can be used as an FM radio.  RCA cables connect to audio source such as TV or stereo.  You can buy adapters to connect to other sources such as cell phone, PC, or MP3 player.

Transmitter uses 4 AAA batteries, Headphones use 2 AAA batteries, batteries not included.

There is a socket for a microphone.  Microphone not included.