Specifications:
General Specification
  Brand  USAMS
  Model  US-SJ022
  Color  black, gold, rose gold
  Cable Length  1.2 meters
  Wearing Type  In-ear
  Material  ABS + Aluminum alloy + TPE
  Product Weight  170g
Technical Parameters
  Conectivity Interface  3.5mm audio jack
  Driver Unit  14.2mm
  Receive Sensitivity  104±4dB (1KHz)
  Impedance  32±15%Ω
  Frequency Response  20-20KHz
  Microphone  Support
  Mic Sensitivity  -40±5dB (0dB=1V/Pa1KHz)

Package  Included:

 1 x USAMS SJ022 Earphone
 1 x English User Manual