Premium In-Ear Stereo Headset Handsfree Earphones for Samsung T339, T229, M200, I325 ACE, I617 Blackjack 2, A747 SLM, M520, M510, R500 HUE, T729 Blast, T539 Beat, A517, A737, T439, T739, R300, R200, A827 Access [Retail Packaging] True Stereo Sound (if supported by your phone) Comfortable fit, light weight, excellent sound quality It comes with a collar clip, convenient and low profile. Switch between listening to music and answering a call with a press of a button This handsfree can reduce the contact of harmful radiation from your phone and offer clear sound.