i-Kawachi(TM) Stereo Headphone 3.5 Mm In Ear Earphone BASS HIFI Earbuds with Microphone Grey i-Kawachi is the Amazon registered brand Metal heavy bass earphone, human engineering design, aluminium alloy shell, fashionable apperance, comfortable wearing. Triple frequency equency equalization. The voice acoustic full, broad, powerful bass. Compatible with most of mobile phones with IOS or ANDROID OS, for iphone 4 4s 5 5c 5s 6 6plus 6s 6s plus samsung LG HTC HUAWEI XIAOMI, also for IPAD IPOD MP3 MP4, media device with 3.5 mm jack.