Designed to combine studio-quality sound with mobile convenience, the ATH-M50xBT Wireless Over-Ear Headphones from Audio-Technica features sound reproduction from 45mm large-aperture drivers with rare-earth magnets, and copper-clad aluminum wire voice coils. Together, they are designed to provide both clear audio and rich, deep bass. To help further enhance audio fidelity, the M50xBT features padded noise-isolating earcups, and aptX/AAC codec support. Key Features 45mm Large-Aperture Drivers Built-In Rechargeable Battery Up to 40 Hours of Playback 90° Swivel Earcups What's in the box 1x Audio-Technica Consumer ATH-M50xBT Wireless Over-Ear Headphones 1x 3.5mm Audio Cable (3.9') 1x Micro-USB Charging Cable (1') 1x Carrying Pouch