The MA818W is a light-weight portable Wireless PA with a rechargeable battery and includes a wireless microphone for convenient speaking and music reinforcement. An optional PRA535NC/P push-to-talk wired noise-cancelling microphone is also available, featuring excellent attenuation of ambient noise. The MA818W comes with a shoulder strap for voice-on-the-move and is a convenient PA tool for schools, churches, presentations and tour guides. There is a 5/8" threaded socket at the bottom for mounting the MA818 onto a microphone stand.