Simplified call management with an easy interface for answer/end, mute and volume on PC, smartphone or tabletBluetooth mini USB adapter for always-ready PC connectivityTalk-time up to 7 hours, standby time up to 5 daysIntelligent bi-directional microphones activate in the direction of the speaker’s voice360-degree room coverage with active background noise reductionDesigned to simplify call management with an easy interface for answer/end, mute and volume on your laptop or smart phone, and it comes with a Bluetooth® mini USB adapter for always-ready PC connectivityWith its own high-quality travel case, the small, lightweight speakerphone is the right size for your laptop bag or carry-on, without cords or fussOffering unmatched audio clarity, the Calisto 620 features 360° full duplex audio and Bi-directional microphones that activate in the direction of the speaker’s voice so callers hear you—not your backgroundPC wideband audio and Digital Signal Processing (DSP) reduce drop-outs and echo with Acoustic Echo CancellerIntegrated A2DP lets you listen to streaming media from your mobile device, including your favorite songs, podcasts and moreCall control across multiple softphonesBattery meter conveniently displays headset battery life remaining in PC icon trayHeadset control panel allows for customization of settings, including call notification and related optionsUC presence automatically updated when on a call; not only on PC calls, but also when on mobile calls