| "Hamilton Electronics presents a 10 pack of Hamilton HA5USBM USB Headphones with Microphone, in-line volume control and mute button. This lab pack comes in a durable laminated cardboard carrying case. Lab Pack Includes: (10) Hamilton HA5USBM USB Headphones (1) Laminated cardboard carrying case Headphone Description: The Hamilton Electronics HA5USBM starts with Hamilton's HA-5M headphone with built-in microphone and adds integrated USB Sound. Use these headphones with any USB-equipped computer, even one without a sound card! New soft leatherette style washable, replaceable ear cushions, new easier-to-wear lighter design with swivel ear-cups and soft coil, 3 meter long cord (almost 10 feet!) all contribute to longer fatigue-free use. Now in easy to mark medium gray colors. Specifications: Built-in Microphone USB 2.0 Compliant Exclusive XearTM Software for reproduction of CD Sound Impedance: 170 ohms Speaker drivers: 57mm cobalt magnet type Headphone frequency response: 18-20k Hz 3 Meter Cord Virtual Dolby 5.1 CH Effects Macintosh, Win 98Se, ME, 2000 and XP Compatible User friendly volume controls Durable leatherette ear pads One (1) year warranty. |