The SM300 is a compact speaker / shoulder microphone with a high stress, swivel belt clip. The SM300 is equipped with a standard 3.5mm port which can be used to connect a listen only earpiece.
•Compact speaker microphone
•3.5mm listen only port
•2" wide, 2 3/4" tall
•High stress swivel belt clip
•Connectors available: M6, S2, S6, and S8
•One Year Manufacturer warranty