Dynamic Receivers 
Receiver Telephone Receiver
Advanced Acoustic Technology Corp. Proessionally manufacturer of Dynamic Receivers. We have various Receiver, Diameter from 8mm to 50mm, Resistant from 16ohm to 600ohm.(Dynamic Receiver, Telephone Receiver.)
There are over one thousand specifications now, the complete dimensions for you to choose, we can modify the length of the pins and the wires, or even customize for your unique project.