Audio-Technica ATH-M50S Professional Studio Monitor Headphones - with Straight Cable + BONUS Photive 5200mAh Portable Backup Battery Charger Power Bank. Mobile Power Source for Smart Phones and Digital Devices Exceptional audio quality for professional monitoring and mixing Collapsible design ideal for easy portability and convenient storage Adjustable padded headband for comfort during long mixing or recording sessions. Frequency Response: 15 - 28000 Hz. Cable Length: 3.50 M BONUS ($50 Value) 5200mAh Portable Battery Charger - Allows you to Charge Any Mobile Device with A USB Port On the Go ButterflyPhoto is a Authorized Audio-Technica Dealer