The black and silver Panasonic Noise-Canceling Earbud-Style Travel Earphones can provide up to 22dB of noise reduction for use in playing back music while traveling or at home. They have an in-line, pen-style noise reduction unit that has slide volume control and a clip to attach to your clothing. It is powered by a single AAA battery that can provide up to 40 hours of noise reduction. Three pairs of earpads are included to provide you with the most comfortable fit possible. An air plug adapter for use on airplanes and a carry pouch are also included.