These premium noise-cancellation headphones offer exclusive noise-reduction technology and the power to last up to 60 hours of use. Noise-cancellation technology reduces up to 85 percent of outside interference while delivering crisp, high-quality audio. The powered amplification system offers improved bass and a clear audio output. Adjustable stainless steel headband with comfort-fit design provides comfortable use for extended periods of time. Removable cable lets you easily store your headphones. Headphones include a hard-sided carry case and AAA batteries.