Shure QuietSpot Headset with Inline Microphone for Select Sony Ericsson, Samsung, Motorola, and LG  Phones Sound-isolating earphone blocks 80% of outside noiseVoicePort in-line microphone rejects 70% of extraneous noiseLightweight, secure in-ear designPersonal fit kit with interchangeable sleeves for the earphoneFlexible ear support for comfort2.5mm plug