1) 4-pole 3.5mm mic supported audio jack
     Handle music and microphone with just one 4-pole audio jack， to work with iPhone， Blackberry and HTC.
     Also works with compatible 3.5mm audio devices - iPad， iPod， MP3 and selective handphones.

 2) auto switching calls + music
      Built in IC diverts incoming/outgoing phone calls automatically while you are in music listening mode.
      When a phone call ends， it would resume to music play mode or vice versa.

3) multi-functional control 
     Performs 5 functions:

    - on/off

4) detachable PC audio converter with mic 
     Extend usage beyond smartphones. It converts 4-pole to 3-pole audio jack to work with any PC or 
     notebook for music listening and handling internet voice chat. Works with Skype， MSN， Yahoo Messenger etc.

5)  immersive HD sound
      Energize your day with great music. HD speakers deliver Highs， Mids and Lows in perferct balance.
      Sound clarity with minor audio distortion even when the volume is pushed to the maximum.
      Feel the heart pumping sound sensation with the strong bass performance.

6) interchangeable ear-buds 
     3-size interchangeable silicone ear-buds (S，M，L). choose the size that's right for your ears.