I bought this new but the jack didn't fit, so I never used it. It's been opened, but it's unused. BUFFALO Headband Headphones * Equipped with a 40mm large driver unit for high-quality sound. * Features soft cushion ear pads, making them comfortable to wear for extended periods. * Includes a volume control function for adjusting the sound level at your fingertips. * Connects via a 3.5mm mini-plug (green and pink, 2-pole) and is compatible with computers, etc.