I-Tec Ear Subs with Microphone, Ambient Noise Isolation and 3 Size Inserts for iPod and MP3 Players (Black) Compatible With Iphone & Iphone 3G/3Gs Custom In-Ear Fit With 3 Sizes Of Inserts For Maximum Comfort Engineered For Ultimate Stereo Sound Designed To Isolate Ambient Noise Features Answer & Hang Up Button Located On Speaker Black Ear Subs Isolated Ambient Noise 3 Size Inserts for maximum comfort and personalization to your ear canal Microphone with Multi-Function Button Lifetime Warranty