Product description    play bass for a good polka dots. Canal Earphones! Speaker unit Units: * Type: ear type (canal) Plug: * Type: Straight * Diameter: 3.5 mm Cable: * Length: 1.2 m * Form: symmetry (Y type) Remote Control: * Volume Control * Mike (talk) * Music and video playback mode: Play， Pause， Previous Track， Next Track Standard: * Maximum input: 40 mW * Sensitivity: 90 dB / mW * Resistance: 26 ? * Frequency range: 20 ~ 20，000 Hz Includes: Replacement caps Weight: 2.8g (without cord)