Marathon DJH-1100 Professional High Performance Stereo DJ Headphones. Designed for maximum comfort when headphones are used for longer periods of time. Folding with Universal Pivot Joint: The pivot allows the headphone to be folded for comfort and easier storage, and also enables the DJ to turn the headphones in either direction for free-style single ear monitoring. Large Dimaeter 57mm Driver: High power input (3,500mW) for monitoring high levels of sound. Hermetically sealed body with high sound-insulating ability.