NTT Technocross Audio Conference Microphone and Speaker RT900 (NTT-TX) "R-Talk 900"

[Connectivity with communication devices] Connection with mobile phones, smartphones, tablets, PCs, etc. is possible. (Connection with landline phones is not possible.) [Realize smooth conversations like face-to-face conversations] Adopts acoustic processing technology that improves call quality during double talk (simultaneous speaking). [Recommended number of people for meetings] The main unit alone can accommodate 1-6 people, and with two dedicated expansion microphones (optional), it can accommodate meetings of about 10 people. [Lightweight and compact body] The lightweight and compact body makes it easy to carry (external dimensions: W215mm x D100mm x H29mm, weight approx. 390g), can be connected via USB, and can record calls (external device required). [Mobile connection] To connect to a mobile phone or smartphone, the RT-OPT-CBL1 mobile cable set (optional) is required. (Bluetooth connection is not possible.) This is a telephone conference system that enables realistic conversations as if you were in the same place and can be connected to a variety of communication devices.