Original Blue Spectrum BS-04 Earphone For Smart Phones

Blue Spectrum bs-04Performance parameters: - Speaker diameter: 10mm- Frequency range: 20Hz-20KHz - Sensitivity: 95dB±3 - Impedance: 16 ohms - The wire length :135cmProduct features: - Applicable to the 3.5 foot interface of intelligent mobile phone -The stereo output dynamic combination -The built-in mic handsfree