Name: Wired Half-In-Ear Earphones JR-EW04 model number Entire Wired Joyroom EW04 Black and white in color Half-in-ear speaker with a φ14.2mm horn Range of frequency response: 20 Hz to 20 KHz; AC impedance: 32 Ω 3 mW of rated power Length of cord: 1.2 meters Composition: TPE and ABS Type of connector: 3.5mm