Skullcandy Holua Wooden In Ear Bud with In-Line Mic S2HLDY-081 (Silver) (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 Frequency response 18-20K Hz, impedance: 16 ohms Magnet Type: NdFeB Wood Construction