HANDS FREE EARPHONE-MIC

  Prominent sound quality and stylish Hands Free
  Earphone-Mic allows you a free movement in communicating with
  the Cellular Phone and Computer.

•  * Omni or Uni-directional Microphone unit is very high sensitive and
•     has a strong inhalation power.
  
•  * Due to using the Uni-directional Mic Cartridge, sow up the clear
      communication, which is not to be inserted a noise.(HEM-230H,
•     HEM-260B)
  
•  * Outstanding Earphone Unit to reproduce original sound clearly.
  
•  * High Grade Cable : Tensile strength is 10Kgs and bending strength
•                                     is 8,000 cycle over
  
•  * Attached of remote-control switch and Tie clip to the switch box
  
•     Adhesion of Ear Hanger which feels a sense of convenience and     security.
      (A utility model and design patent application No.17791)

ELECTRICAL SPECIFICATIONS OF MICROPHONE UNIT

• NOMENCLATURE : ELECTRET OMNI-DIRECTIONAL MIC CARTRIDGE
  
• IMPEDANCE : 2.2Kohms Under
  
• SENSITIVITY : -40dB ±3dB AT 1000Hz (0dB=1V/Pa)
  
• FREQUENCY RESPONSE : 50Hz~18,000Hz
  
• POWER SOURCE : 1.5V~5V
  
• S/N RATIO : 40dB or More

ELECTRICAL SPECIFICATIONS OF EARPHONE UNIT

• NOMENCRATURE : DYNAMIC UNIT
  
• IMPEDANCE : 32~150ohms
  
• SENSITIVITY : 106dB ±3dB AT 1000Hz(0dB=20¥́pa/V)
  
• FREQUENCY RESPONSE : 50Hz~18,000Hz