Jabra Speak 510 Wireless Bluetooth Speaker for Softphone and Mobile Phone (U.S. Retail Packaging) Clearer conversations for more efficient meetings, crystal-clear voice experience ensures everyone is heard Optimized uc experience, set-up in seconds - compatible with all leading uc platforms. Up to 15 hours of talk-time on a single charge Speaker frequency range Wideband - Response from 250Hz to 14KHz, speaker bandwidth - music mode wideband - response from 250Hz to 14KHz, speaker bandwidth - conference mode 250Hz to 7.5kHz (wideband), 250Hz to 3.5kHz (narrowband). Hear and be heard with a 360-degree Omni-directional microphone that picks up sounds from any angle Bluetooth 3.0, range of up to 100 meters on Class 1 devices, USB BT audio device/HID dongle, hold conference calls in meetings wherever you go compact and portable Seamless connectivity, simple plug and play set up via USB or Bluetooth to get your meetings started quickly.The models that are certified for Microsoft Skype for Business (Lync) support Microsoft Skype for Business in plug-and-play mode. These models support features for answering and ending calls, adjusting the volume and muting