Speak 510 + MS ( P/N: 7510-309) Bluetooth and USB Conference Speaker Omni-DirectionalClearer conversations for more efficient meetingsCrystal clear voice experience ensures everyone is heard"It enabled me to actually hear the meeting properly and pick up on the nuances of the call very effectively"Hold meetings wherever you goA compact portable design lets you hold conference calls anywhereFeatures at a glance:Built-in omni-directional microphoneHear and be heard with a 360 degree microphone that picks up sounds from any angle.Smart button (off by default)Interact with your voice assistant (smart phone dependent) or make a speed dial with the one-touch Smart button. Must be configured in the PC app Jabra Direct.15-hour rechargeable batteryUp to 15 hours of talk-time on a single charge.Digital Signal Processing (DSP) TechnologyCrystal clear sound without echo or distortion - even at maximum volume level.Jabra Link 370 USB adapter (Bluetooth Class 1)Easy Bluetooth connection and call control integration with your softphone system.Bluetooth Class 1Easy Bluetooth® connection to tablets and mobile phones. Range of up to 30 metres on Class 1 devices.