Free Express Shipping! Sennheiser IE PRO Mono One-Sided Cable for IE 100 PRO, IE 400 PRO & IE 500 PRO Earphones (Clear, 5') For IE 100 PRO, IE 400 PRO & IE 500 PRO, One-Sided Design for In-Ear Talkback, 3.5mm TS Mono Connector, Rugged Twisted-Pair Cable