tune out the world, tune in full-spectrum stereo music and conveniently switch to calls on your music-enabled phone. innovative stereo ear buds seal out noise and seal in sound for better listening, while audioiq technology digitally enhanced sound improves call quality on both sides of the call. the sliding boom gets you closer to the microphone, so you are heard better than ever. convenient one-touch buttons let you control calls and music from your headset. at only 15 grams, it’s lightweight, comfortable and discreet. on the train, on the road, on the move— the plantronics voyager 855 bluetooth headset the perfect convertible for traveling life’s highway. easy pairing with plantronics quickpair technology audioiq technology digitally enhances sound quality on both sides of a call seamlessly switch between calls and music listening sliding boom lets you be heard clearly sliding boom conveniently answers and ends calls seal out the noise, seal in the sound with innovative ear buds full-spectrum stereo sound with rich, balanced bass easily convert mono headset to stereo listening with detachable cable dedicated call and music controls at your fingertips up to 7 hours talk time from a single charge ready, willing and able with 160 hours standby time from a single charge compact and discreet comfort at only 15 grams parallel imported warranty: warranty one year delivery within 2-4 business days