YD ELECTRONICS&reg; Headphone Adapter - New Design w/ Black and Grey Jack Covers for iPhone 4/4s Lifeproof Cases New design without the pesky cable, which is the weakeness of the original adapters. All metal parts are Nickel Alloy for better corrosion resistance. ABS Plastic Resin body for durability. Nitrile black O-ring to guarantee waterproffing. YD ELECTRONICS brand not OEM.