Cord Length:4ft , the appropriate length raise its use efficiency.
Excellent Sound Quality: conductor is using 99.999% (5N) Purity OFC (Oxygen-Free Copper), Cable made by Matched Crystal(MC) Metal and Silver Plated Core, with 24K gold-plated 3.5mm & 6.35mm Plug & braided nylon cable.
Better sound range, strong and solid quality, better extension of high frequencies.
Fit for Sennheiser HD525 HD545 HD565 HD580 HD600 HD650 Headphones
Package included: upgrade cord*1.(earphone not included)