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BRAND NEW COSONIC CT-650 COLOR HEADPHONE FOR COMPUTERS, BLUE COLOR OR YOU CAN CHOOSE YELLOW OR PINK ONE. SPECIFICATIONS DRIVER UNIT: F40MM SPEAKER IMPEDANCE: 32OHM±15% SPEAKER SENSITIVITY: 100DB±3DB SPEAKER FREQUENCY RESPONSE: 20-20,000HZ MAXIMUM POWER INPUT: 80MW MICROPHONE OPERATING VOLTAGE: 4.5V MICROPHONE IMPEDANCE: 2.2 K MICROPHONE SENSITIVITY: -58DB±2DB MICROPHONE FREQUENCY RESPONSE: 30-16,000HZ CORD LENGTH: 2.2 METERS |