Computer Pc Laptop Headphone Headset Microphone Mic Ideal Headphones to Enjoy Music and Internet Chat (Skype, MSN, etc.) Plug in standard 3.5mm audio jacks for speaker and microphone Built-in Microphone can be swiveled and bend to fit your need, and in-line adjustable volume control Low power consumption, plug and play, no PC driver required Adjustable head frame; Sensitivity: 105 dB SPL at 1kHz