EPOS EXPAND 30 +. Device type: Universal, Product color: Black, Silver, Maximum operating distance: 984.3" (25 m). Frequency range: 100 - 20000 Hz. Microphone frequency: 150 - 7500 Hz, Microphone direction type: Omnidirectional. Connectivity technology: Wired & Wireless, Interface: USB/Bluetooth, Bluetooth profiles: A2DP, AVRCP, DI, HFP, HSP. Power source type: Battery, USB, Talk time: 18 h, Battery recharge time: 3.33 h
