Retevis 1 Pin 3.5mm Throat Mic Headset Covert Air Tube Earpiecee&nbsp;with Mic PTT for Mobile Phones Iphone 5 4 4s Samsung Galaxy S4 S3 Note 2 9500 9300 HTC&nbsp;LG (1 Pack) 3.5mm standard plug;Total length:1205 mm(not include Throat MIC ) Length from plug to PTT is:950mm;Length from PTT to Throat control is: 255mmm Built-in push to talk button, easily answer the phone without touching your phone The throat mic could be easily hidden under the collars;Low-profile, flexible, transparent acoustic tube transmit sound in high quality the transparent tube would be hardly noticed by others around you This headset is for use with the almost phone with 3.5mm plug,except Nokia and Sony Xperia