|In Sales Package||Headphone, Earbuds, Charging cable, User Manual|
|Play Music Time||8h|
|Stand by time||180h|
|Power Supply||DC 5V|
|Sensitivity||90dB ± 3dB|
|Impedance||32Ω ± 15%|
|Frequency Response||20 – 20KHz|
|Transmission Range||10m (barrier-free space)|
Frequency response is the range of bass, mids and treble. 20 to 20,000 Hz is generally accepted as the audible frequency range, this is the standard for most headphones. Some Earphone offer wider ranges (for example, 5 to 33,000 Hz), but better frequency response does not always mean better sound quality. Below 20 Hz bass frequencies can be felt more so than heard, treble frequencies over 20,000 Hz are not always audible.
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