Speaker diameter: 10mm Impedance: 32 ohms Sensitivity: 104+ / -2dB, S. P. L. At 1kHz Frequency response: 20Hz-20, 000Hz Max. Input power: 100mW Cord length: 1, 250+ / -50mm Plugs type: 3.5mm stereo Microphone specifications: A Dimensions: 6 x 5mm B Directivity: Omnidirectional C Impedance: Low impedance D Sensitivity: -54+ / -2dB E Frequency response: 20Hz-20, 000Hz F Rated voltage: 3V