This is a wireless mike that you attach to your shirt or jacket, and ideal for public speaking. It was purchased by a friend who only used it a handful of times, and has since sadly passed away, so I'm selling it for his widow. It comes complete with the transmitter, receiver and power supply in a carrying case as shown. In perfect working order and virtually mint condition. They are advertised new online for around £99.00p ..see this link: https://www.gak.co.uk/en/audio-technica-atw-251l-lavalier-presenter-pack-(174.600/35590?gclid=Cj0KEQjw1K2_BRC0s6jtgJzB-aMBEiQA-WzDMQnb-gvdaL7OZf2QTtX2gIZSKdEVXH5I8nqHsY5xdGoaAm-q8P8HAQ ;