Hoco M1 Original Series Earphone For Apple Fashionable and lively digital accessory brand that represents high quality and excellent workmanship. Through its trendy designs & high quality materials they try to meet the customers' requirements Specifications: - Speaker: 14 mm - Impedance: 32 Omega + / - 15% - Frequency of response: 20 - 20000Hz - Sensitivity: 116 db + / - 3 db - Audio plug: 3.5 mm - Earpiece line: TPE high-elastic line with enameled wire - Microphone: Equipped - Wire control: compatible with mainstream apple and android phones, with exquisite workmanship, premium imitation 1:1