[4 Pin XLR Male Dual 3.5mm Male 8 Core Braided Silver Plated Cable For HE4XX HE-400i (2 x 3.5mm Version) Cable length is about 1.8m "Dual 3.5mm Male Version that be putted into headphone plug Compatible with HE4XX the latest version HE-400i with Dual 3.5mm plug headphones it doesnt fit the old version HE-400i headphone with Dual 2.5mm Male Version"]