The Hamilton Electronics HA2USBM starts with Hamilton's HA-2M headphone with built-in microphone and adds integrated USB Sound. Use these headphones with any USB-equipped computer, even one without a sound card!

Built with kid's health and safety in mind, these are the first headphones designed to combat the spread of head lice in schools. Each headphone comes in its own heavy-duty, write-on, reclosable bag. When sealed in the bag, lice is killed in 24-48 hours without the use of chemicals.

Specifications:

· Built-in boom microphone
· USB 2.0 Compliant
· Exclusive XearTM Software for reproduction of CD Sound
· Virtual Dolby 5.1 CH Effects
· Macintosh, Win 98Se, ME, 2000 and XP Compatible
· Impedance: 170 Ohms
· Frequency response: 18-20k Hz
· Cord: 2 meters
· Speaker drivers: 40mm Cobalt magnet type
· Weight: 5 Ounces
· One (1) year warranty.