The first Bluetooth headset! Product model: KZ-T10 Configuration: 40MM Dynamic Function: ANC （Active Noise Cancelling） Microphone: 5 high-definition microphones Frequency response range: 20-20KHz Noise reduction range: 50-800KHz Impedance: 32Ω Depth of noise reduction: ≥25dB Sensitivity: 101dB Bluetooth version: Bluetooth 5.0 Charging interface: TYPE-C Transmission distance: more than 10m Headphone battery capacity: 800mAh Headphone knowledge Impedance (Impedance): The effect of the earphone and the current AC obstruction is called impedance. Generally speaking, the smaller the impedance, the easier it is for the earphone to sound and drive. For various portable audio players, such as mobile phones, CDs, MP3s, etc., low-impedance headphones are generally chosen. Sensitivity: The sound pressure level that the earphone can emit when 1 milliwatt of power is input to the earphone (the unit of sound pressure is decibels, the greater the sound pressure, the greater the volume), so generally the higher the sensitivity, the higher the resistance of 6N OFC The smaller the earphone, the easier it is to sound and drive. Frequency response range: (Frequency Response): The frequency response range of the earphone refers to the width of the frequency band that the earphone can send. The frequency response width of an excellent earphone can reach 5Hz-40000Hz, and the standard range is at least 20Hz-20000Hz.