The HD 1 AEi headset brings signature Sennheiser sound to an updated iconic design. Premium components like the stainless steel headband and real leather covered headband and ear cushions illustrate precision craftsmanship and exude luxury. The new folding headband design provides greater portability. The new slightly larger ear cups feature ergonomically designed, memory foam cushions for improved ambient noise isolation and extreme comfort during long listening sessions. This is an Apple iOS compatible model with single-sided detachable cable incorporates an inline remote and mic for controlling music and taking calls. The HD 1 AEi again raises the performance bar for premium wired mobile headsets.