AKG K375WHT Premium High-Performance In-Ear headphones with In-Line Microphone and Remote Control for iOS Devices, White True high-performance AKG sound In-Line Microphone and volume control for iOS devices Real aluminum housings provide superior acoustic dampening, extended bass response and reduces the resonances that can compromise sound quality Closed-back design helps impede outside noise from entering your ears while also preventing the sounds that you're hearing from leaking out for the outside world Silicon sleeves in three sizes for the perfect fit (S, M and L)