https://www.youtube.com/watch?v=GdIg-FnI4ck Type: Dynamic Driver Diameter: 45 mm Frequency Response: 5-40,000 Hz Maximum Input Power: 2,000 mW Sensitivity: 100 dB/mW Newly designed 45 mm True Motion Drivers deliver Hi-Res Audio reproduction Ultra-comfortable, soft, memory foam earpads and headband Includes carrying case Available in black (ATH-MSR7BK) and gun-metal grey (ATH-MSR7GM)Customer ReviewsNo reviews yet. Be the first to review!