Yucurem 3.5mm to 2.5mm Audio Cable Wireless Headset Cord for Sennheiser HD4.40BT - Walmart.com
Amazon.com: Replacement Headphone Cable for Bose Headset 2.5mm to 3.5mm Male Audio Cable Headphone Aux Cord Compatible with Bose QC25, QC35, 700, SoundTrue, JBL Live 650BTNC with in-line Mic and Volume Control :