Ear bud: fashionable alloy metallic housing Plug:3.5mm gold-plated Cord length:1.2m Cable:Zipper cord， portable reinforced textile cord Frequency Response: 20HZ-20000HZ Impedance:32ΩSensitivity: 103db±3db SPL@1KHZ Max input:5mW 12 months quality warrantyCE and RoHS certificated