Model Name: SR60e Specifications: - Transducer Type: Dynamic - Operating Principle: Open Air - Frequency Response: 20 - 20,000 Hz - SPL 1mW: 99.8 dB Nominal - Impedance: 32 ohms - Driver Matched dB: .1 dB Includes: - Headphones - Warranty - Grado story-sheet - 6.5mm Golden Adapter What's in the box 1 x Headphones