Delivering sonic brilliance in a lightweight (6 oz.) design, RH2C dynamic headphones provide the perfect listening environment for use with portable keyboards or casual listening. Featuring a new ear cup design, RH2C offers increased noise reduction and long-term comfort with soft, vinyl ear cushions and an extra-wide head band. Other features include: 92 dB/mW of sensitivity: 32 Ohms of impedance: 25 Hz-15 kHz of full-spectrum frequency response. Includes 8' cord with 1/8″ plug and 1/4″ adaptor.