Additional Details ------------------------------ Product description: Free yourself from bulky headphones and boring designs. The Free Series headphones by iDance provides a lightweight ergonomic fit, 30mm neodymium bass driver, and integrated line-in mic all encapsulated in a fresh design. Bring freedom to your choice of headphones with the iDance Free Series! Impedance - 32 Sensitivity - 108dB+-3dB Frequency Response - 15Hz~20KHz Cord Length - Approx 5 foot 3.5mm gold chrome plug Create your own DJ mixes with the included software voucher for PCDJ 3DEX LE and Magix Mufin