Mairdi MRD-509S

Features : 

• Advanced voice-conducting technology offers excellent sound quality.
• Replaceable microphone boom and adjustable headband for perfect fit
• Protein leatherette ear cushion for all-day comfort 
• Replaceable and length-adjustable voice tube MIC tube
• Foam or protein leatherette ear cushion 
• Multiple connecter choices: RJ9 plug, 2.5mm, 3.5mm stereo plug, USB2.0 plug
• M-volume controller (with Mic Mute) is optional
• Two kinds of standard QD plugs: G-QD or P-QD 
• 330°rotatable MIC pole
• 60mm adjustable T-Pad headband 180° rotatable joint of speaker and headband
  CE, FCC certificated