Jabra Speak 510 Ms Speakerphone Turn any conversation into a productive conference call in seconds with the Jabra Speak 510. An intuitive speakerphone that connects via USB and Bluetooth with crystal clear sound. All the conference call capabilities without the complexity. Easily connect to your PC, tablet, or smartphone using either USB or Bluetooth. Get up to 15 hours of talk-time on a single charge. Top the battery up by plugging in via USB.