Skullcandy Holua Wooden In Ear Bud with In-Line Mic S2HLCY-011 (Bleached Wood) (Discontinued by Manufacturer) In-Line Mic for iPhone, Blackberry and any phone with 3.5 jack and with control switch (Play/Pause/Track control) Speaker diameter: 8mm Magnet type NdFeB Frequency response 18-20K Hz, impedance: 16 ohms Max input power: 10mW