SOUND SPECIFICATIONS OmniSound® HD. Microphone: Omnidirectional, 360˚. Coverage range: up to 3 m > 6 people. With a pair of expansion microphones, up to 6 m/> 16 people. Frequency range: 100–24000 Hz. Volume: 90 dB SPL 0.5 m.
INTERFACE USB: USB 2.0 Mini B, connects to computer. Mobile phone: Optional cable is required. Deskphone: For connection to an IP or TDM desk phone using a Konftel Desk phone adapter, accessorie. Headset output: 3.5 mm phone plug (TRS/TRRS). Bluetooth: v 2.1. For connection to a mobile phone or other equipment that supports the Bluetooth Handsfree/Headset profile.
POWER SUPPLY AC Adapter: 100–240 V AC/12 V DC, included. USB powered: via included USB cable with inserted battery. Battery: Rechargeable battery up to 9 h talk time, included.
CALL RECORDING Support recording on SD & SDHC (≤ 32 GB) memory card.
UPGRADES Konftel upgrade utility (for Microsoft Windows) upgrades software via the USB connection. It is also possible to upgrade via an SD card.
DIMENSIONS Size: Width 222 mm, depth 206 mm, height 68 mm. Weight: 640 g. Colour: Liquorice black and silver.
DISPLAY AND KEYPAD Display screen: Colour LCD, 240x320 pixels. Buttons: Touchscreen plus on/off and microphone/speaker switch-off.