The Audio Technica ANC9 Headphones is designed with travel use in mind. Featuring integrated noise-cancelling electronics in each earpiece, the ANC9 eliminates up to 95% of ambient noise and is powered by a single AAA battery which provides approximately 30 hours of continual use. Additionally, these premium headphones also feature 3 different noise cancelling modes to suit your listening environment, an inline microphone for answering phone calls or controlling music, and luxurious memory foam padding on the headband and ear cups. The ANC9 also functions passively without a battery to ensure your playlist flows continuously until you press stop. 40mm drivers coupled with newly engineered electronics deliver a clear and natural full range sound with powerful bass, a detailed midrange and an extended treble that will satisfy the demanding audiophile. If you’re in search for a pair of premium travel headphones with adjustable noise cancelling properties, the Audio Technica ANC9 will be music to your ears.