Audio-Technica ATH-M50x Professional Studio Monitor Headphones with Coiled Cable (New 2014 Model) + BONUS Photive 5200mAh Portable Backup Battery Charger Power Bank. Mobile Power Source for Smart Phones and Digital Devices BONUS ($50 Value) 5200mAh Portable Battery Charger - Allows you to Charge Any Mobile Device with A USB Port On the Go This Kit Includes Some Of The Essential Accessories You Need To Take Full Advantage Of Your New Audio-Technica ATH-M50x Professional Studio Monitor Headphones Critically acclaimed sonic performance praised by top audio engineers and pro audio reviewers. &gt; Proprietary 45 mm large-aperture drivers with rare earth magnets and copper-clad aluminum wire voice coils Exceptional clarity throughout an extended frequency range, with deep, accurate bass response. Circumaural design contours around the ears for excellent sound isolation in loud environments. &gt; 90 Degree swiveling earcups for easy, one-ear monitoring, professional-grade earpad and headband material delivers more durability and comfort. Detachable cable.