East Brooklyn Labs Bluetooth Wireless Adapter Amplifier for Audio Technica ATH M50x Professional Studio Headphones Features & details * WIRED TO WIRELESS Seamlessly turn your Audio Technica Headphones into a wireless headset while maintaining the quality and sound that makes the ATH M50x headphones so amazing * COMPATIBILITY Designed to work with Audio-Technica ATH M50x professional studio headphones making wired for work and wireless for personal use * MAINTAINS CLARITY Exceptional clarity throughout an extended frequency range, with a deep, accurate bass response with controlled mid and high frequencies * HAS ACTUAL BUTTONS Includes volume up and down buttons and allows you to toggle between tracks using the buttons making it very convenient * QUICK CHARGE BATTERY Its built-in battery gives you up to 5 hours of listening pleasure and charges in only 30 minutes