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Clear Sound TechnologyOur Universal Stereo Headset incorporates Clear Sound Technology (CST), by utilizing shaped drivers that have been tuned for superior sound quality.Built-in Flexible MicrophoneUse for Internet Chat, Conference Calls, VOIP and Gaming Applications. Microphone has built-in rotation, so you can rotate up and out of the way when not in use. Foam Microphone cover reduces wind noise and improves sound quality. Adjustable Headset & Swivel Earcup DesignOur innovative design allows you to adjust the headset for a comfortable secure fit. The swivel Earcup design will ensure that the foam earcups fit comfortably and provide a secure fit for optimal sound performance. Convenient Volume ControlOur on-cable volume control allows you to adjust the volume up or down right on the... Less

Sound StorySony® headphones deliver dependable, quality audio reproduction time after time. Equipped with 9 mm high-sensitivity driver units, our MDR-AS400IP Sports headset is no different while also affording a secure, comfortable fit that lets you get close and personal with your workout. Adjustable Ear LoopEasily adjust for a precise fit by looping the ear loop around the ear and pulling snug. Once in place, the MDR-AS400IP earbuds stay put, letting you focus on matters at hand.Water resistantThe water resistant housing prevents sweat and water from leaking in, making these headphones ideal for an active lifestyle.