Designed for smartphones and tablets. High-quality transducers guarantee crystal-clear sound. "Smart button" - for answering and ending calls, playing and pausing music. Frequency response: 20Hz-20kHz. Impedance: 32 ± 15% Sensitivity: 105 ± 3 dB. Cable length: 1.6 ± 0.15 m - cable with a special profile that prevents tangling. #13#10 Note: These headphones are designed for devices with a 4-pin mini jack port (3.5mm). If the audio source device has a 2-pin port, the microphone function will not be available. In this case, a special converter should be used (not included in the package).