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.

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.