Alcatel OneTouch POP Astro White High Fidelity Stereo Headphones With Hands Free Microphone And Send/Answer/End Button Dynamic Driver Technology Provides Undistorted Crisp and Clear Audio Microphone attached to wire Fits 3.5mm jacks on your cell phone, PDA or music player/Ipod Manufactured By Cellet (not an OEM product) IMPORTANT: Some phones may not support End/Call Button