Make the headphone with the help of old telephone receiver ,
1.Old telephone receiver
2. Old headphone wire with MIC
Step 1: Cut Your Old Headphone and Remove Insulation
Fire to remove the insulation . it's easy method to remove insulation
Step 2: Open the Telephone Receiver and Connect the Audio Wire.
Connect the wire to the receiver
1 . MIC
Right (not used)
Step 3: Before Closing Case You Test It.
Test mic with phone recorder and speaker with music player
Step 4: Insulate the Wires and Close the Case
Insulate the wires using electrical tape or glue.. then wire fixed inside with a tape or glue.