Got an IE 100 Pro to replace my IE 40 Pro. Just realized how the transparent case became yellowish like in phone cases xD : r/sennheiser
Sennheiser IE 100 Pro - Clear | Sweetwater
Amazon.com: okcsc MMCX Cable to IE40Pro(Earphone Side) Adapter Work for MMCX Cable Connected to SENNHEISER IE40 PRO Earbuds Adapter Black : Electronics
Sennheiser IE 40 PRO In-Ear Monitor Headphones, Black Crystal Clear - Walmart.com