Sports headsets with built-in microphone offer comfort and high-quality sound. They work with all devices with 3.5 mm audio jack input. One single button allows to control calls and play music. Preoduct Specification: Speaker: 10mm, connector: 3.5mm Impedance: 16 ohm±15% Frequency response: 20~20000Hz Sensitivity: 93db±3db Material: high elastic cable with enameled wire, cable length: 1.2m