Pioneer SE-M390 Stereo Headphones Brand New Product Details: • High Performance, Ported AV Headphone • 40mm Driver Diameter, Maximum Input 1,500mW, Sensitivity 105dB/mW • Bass duct delivers deep rich lows • Free adjusting headband system, DJ Style swivel out ear piece • Velour type earpad for comfort, 3.5m Ofc litz wire, 3.5mm mini-plug, 6.3mm plug adapter • 1,200 mW max input power • Compatible with most MP3/portable audio devices, including latest generation iPhone/iPod