Purchased new at Yodobashi Camera on November 16, 2024. Used about once a month and stored with care. I haven't had much opportunity to use it, so I'm putting it up for sale. Thank you. Up to approximately 70 hours of wireless playback The Monitor III A.N.C. headphones offer up to approximately 70 hours of wireless playback with active noise canceling, and up to 100 hours with active noise canceling turned off, allowing you to enjoy music without interruption. If you need to charge in a hurry, just connect with a USB-C cable, and a 15-minute charge provides up to approximately 12 hours of wireless playback. Active Noise Canceling and Transparency Mode Active noise canceling has been significantly upgraded from the previous model. New advanced technology has been introduced to continuously measure ambient sounds and cut out unwanted noise. Whether you're in a room, in the city, or on a train, you'll feel like you're alone with your favorite musician. You can choose from three levels of noise canceling: low, medium, and high, allowing you to adjust to your preference, or use Transparency Mode to let in some outside sounds. Marshall Signature Sound Designed to maximize your listening experience. Equipped with dynamic loudness, it optimally adjusts the highs, mids, and lows at any volume. Also, by adjusting the position of the drivers, the space inside the cushion where the ear fits has been increased, achieving richer sound. Rugged and Foldable Design Built tough to withstand everyday wear and tear, and features a foldable design that easily stores in a premium hard case. Soft ear cushions and a plush headband, plus metal swivel hinges, provide a perfect fit for any head shape, delivering excellent sealing and comfort. Textured PU and TPU leather, brass accents, and an embossed Marshall logo give a classic impression. Sound Stage Spatial Audio Expand your sound with the Monitor III A.N.C. The new Sound Stage Spatial Audio technology frees the music from your head and leads you into a virtual room.