Speaker and Microphone

Microphones, speakers and headphones are components commonly used as the input and output devices of many circuits. A microphone converts sound waves into electrical signals that closely follow the waveform of the sound being received. This signal is then amplified by the circuit and transformed into a sound by a speaker or headphone.
Audio & video, wireless multimedia communication & computer accessory ( accessories)- headphone microphone, headset microphone earphones, hands free ( handsfree) earphone, skype earphones, wireless multimedia communication & computers, headphones, headsets, microphone, microphones, earphone with microphone, earphone microphones, mp3 earphones, mp4 earphones, I pod earphones, magnetic, crystal, dynamic, stereo, cell phone ear phones, telephone pick up, extension speakers, buzzers, pillow speakers, call center headsets, extension cords.