The Plantronics Voyager 855 Bluetooth headset is a versatile, stylish accessory with great sound, comfort and performance. The innovative plug-in cable and ear-piece mean you can easily swap between mono and stereo listening – ideal if you are in a noisy environment and want to shut out external distractions – whether for an important phone-call or just to enjoy your music. It is ideal for professionals whose mobile phone doubles as a music device on the move. AudioIQ technology digitally enhances sound. Multipoint technology enables you to switch seamlessly between music and calls.