Yamaha YVC-1000 - Speaker phone - wireless - Bluetooth - NFC - Black<div style="text-align: left;"><strong>[Product Information]</strong><br><ul><li>Multiple connection options via Bluetooth and USB</li><li>Excellent scalability: daisy chains up to 5 microphones and supports 2 external speakers</li><li>High quality audio technology with human voice activity detection (head) to minimize background noise during calls</li><li>One-button auto tuning: analyzes room environment and automatically tunes acoustic settings to the optimal level</li></ul></div><img src="http://ecx.images-amazon.com/images/I/51PYhbXaoIL.jpg" noproxy>