Ear-hang type headset

An ear-hang type headset comprising:

• (a) a microphone case having a microphone supported therein;
• (b) a microphone arm having a first end and a second end, said microphone case being disposed at said first end;
• (c) an ear hanger formed in a shape engageable with an outer periphery of a pinna of an ear of a user of the headset;
• (d) an earphone formed in a shape receivable in a concha of the ear of the user and having a receiver unit supported therein;
• (e) a microphone arm base connected to said second end of said microphone arm;
• (f) a first rotation mechanism interconnecting said ear hanger with said microphone arm base to enable said ear hanger to rotate about a first axis with respect to said microphone arm base;
• (g) a second rotation mechanism interconnecting said earphone with said microphone arm base to enable said earphone to rotate with respect to said microphone arm base about a second axis which is approximately perpendicular to said first axis, whereby said ear hanger and said earphone are adapted to hold the pinna of the ear of the user therebetween;
• (h) an elastic member disposed in a predetermined portion of said ear hanger;
• and
• (i) a projecting member supported through said elastic member at said predetermined portion of said ear hanger so as to project beyond an outer surface of said ear hanger toward the pinna of the ear of the user to a variable extent in accordance with movement of said projecting member in concert with said elastic member in a direction generally orthogonal to said outer surface.