USB Cable/charger for Sony MP3/MP4 NWZ-E436F NWZ-E438F Brand new and high quality USB data cable for Sony walkman Charge or upload your device through the USB port Foil and Braid Shielding to reduce EMI/RFI Interference Oxygen free copper core with environmental-friendly recyclable plastics Twisted-Pair construction to ensure high-speed, error-free data transfer