Amazon.com: 6pcs - (M) Medium Replacement Set Earbuds Eartips Compatible with Sennheiser IE Series, CX Series, CXC Series, CXL Series, OCX Series, and MM Series in Ear Earphone Headsets : Electronics
Sennheiser X Adidas OMX 680i Sports Earclip Headphones with Mic and Remote 638267987460 | eBay