2 x Microphone Speaker Pods (each with 4 x omni directional microphones built-in) 360 Voice Pick up Daisy-Chain Design for 20 attendees of 40 square meters Crystal Clear Conversations during any conference calls Automatic Noise Reduction & Echo Cancellation. Multi- Connections with your devices via USB, AUX audio Jack Compatible with Win7/8 or 10, MacOS x 10.9 or higher, Chrome OS , Linux, Android ,iOS etc. Compatible Software: Zoom, Teams, Webex, Youtube, Xsplit, vMix, Skype, Polycom, BlueJeans, Cisco Plug and play Speaker mute button 9 Hour battery life Microphone Frequency: 100Hz - 22KHz Spreaker Frequency: 100Hz - 22KHz Built in microphone range pick up: 5 meters 360 degree full range pickup Speaker volume up to 85dB 2 Year Warranty This is the bluetooth version and does not include the wireless adaptor as specified. After comparing online prices, www.marvel.co.za should be the cheapest on this product.