MACH-1™ is the ruggedly built, yet stylish, robust yet lightweight multimedia USB headset from HamiltonBuhl® that will connect to any device with a USB port, whether Chromebook, PC, or Mac! Featuring soft leatherette ear cushions, an omnidirectional noise-canceling steel-reinforced microphone, in-line volume control, adjustable headband and excellent, high quality sound, MACH-1™ is designed for all-day comfort and easy compact storage. The ideal companion for ever growing technology in the classrooms, this multimedia USB headset is the high quality, durable yet comfortable accessory each student needs to get the most out of their high tech lessons. Plus, each MACH-1™ Multimedia USB Headset comes with our exclusive Dura-Cord™ (chew, kink and knot-resistant, PVC, jacketed, braided cord), and the Anti-Lice storage bag (heavy-duty, write-on, moisture-resistant, reclosable bag that kills lice within 24-48 hours). Loaded with sought-after features, MACH-1™ is the perfect device for everyday classroom use and testing, too!" "Headset Specifications: Cushions: Soft Leatherette Design: Personal, on-ear Color: Silver/Black Speaker drivers: 40mm Frequency response: 50-20,000Hz Impedance: 32Ω In-line volume control Anti-Lice Storage Bag: Heavy-duty, write-on, moisture-resistant, reclosable bag. Helps prevent the spread of lice! When sealed in the bag, lice are killed in 24-48 hours without the use of chemicals Plug: USB for Stereo Audio and Mic Cord: 5' Dura-Cord™ - chew-resistant, PVC-jacketed, braided nylon Prop 65 Compliant Microphone Specifications: Omnidirectional Noise-canceling Sensitivity: -36dB±3dB Frequency response: 50-16,000Hz Impedance: 2,000Ω Steel reinforced gooseneck mic"