EPOS EXPAND 80T. Device type: Universal, Product colour: Black, Silver, Maximum operating distance: 30 m. Frequency range: 50 - 20000 Hz. Microphone frequency: 150 - 7500 Hz, Microphone direction type: Omnidirectional. Connectivity technology: Wireless, Interface: USB/Bluetooth, Bluetooth profiles: A2DP, AVCTP, AVDTP, AVRCP, DID, GAVDP, HFP, HSP. Width: 118.6 mm, Depth: 315.6 mm, Height: 46.1 mm