EP0321B Features Stylish appearance High-end earmuffs， comfortable to wear Flat cable Shocking low sound quality gives you a live concert-like sound effect Built-in microphone and supports incoming calls With volume + / - buttons General Specs Brand Bidenuo  Model G360 Type In-ear earphone Color Black Drive Unit 10 mm Sensitivity  110DB + /-2DB  Impedance  16 ohms Frequency Response 20–20 KHZ  Connector 3.5 mm gold-plated plug  Microphone Sensitivity   -42 DB Net Weight 24 g Dimension 120 x 2.4 x 1.2 cm Package Details Weight: 121.98 g Size: 18.6*11*4 cm Package Includes * In-Ear Earphones