The Hamilton Electronics HA-66USBSM starts with Hamilton's HA-66M headphone with built-in microphone and adds integrated USB Sound. Use these headphones with any USB-equipped computer.
• Impedance: 32 Ohms
• Frequency Response 20 - 20,000 Hz
• Speaker drivers: 40mm Mylar
• Headphone frequency response: 18 - 20 Hk
• Microphone -Electret Condenser, Omnidirectional Pickup
• Soft leatherette style washable ear cushions
• Windows 7, Vista and XP Compatible (Latest service packs recommended)
• Mac OSX Compatible (Latest updates recommended)
• One (1) year warranty.