Metro Audio Systems ZW-3000D - Conference unit with built-in microphone and arm length 42 cm. (Price for 1 pc - The package includes 3 conference microphones)
Bler Audio ZW-3000S - Central wireless conference control unit with video recording, bluetooth and usb recording. It supports up to 255 wireless microphone units (chair and delegates) with the ability to operate up to 4 microphones simultaneously. Maximum distance of wireless microphone units from the central unit 50 - 80 meters.