Conduct conference calls wherever you are: The handy hands-free solution Jabra Speak connects via Bluetooth and USB interface to your PC, smartphone, or tablet. It is compatible with mobile phones and has been specifically designed for an optimized user experience with Unified Communication clients. The device can be used with a PC for streaming music or audio as well as for phone calls. It features a mute function and is certified by Cisco, Avaya, and Siemens.