Hi-Fi headphones feature powerful 40mm drivers that enable deep bass and a wider dynamic range to deliver clear, exceptional sound. Its audio output produces sound at a maximum of 94 decibels for safe listening. Rotating microphone is attached to a flexible, boom-style arm that can be positioned for optimal voice clarity or turned away when not in use. Plush, sealed earpads offer hours of comfortable usage when learning or taking tests. 9' cord provides great flexibility to sit at a comfortable distance from your computer. Gold-plated audio jack ensures sturdy reliability for heavy usage in the classroom.