Sony **Extended-Life**Premium "EBS" Headset Compatible Universal hinged-stetho type For Transcriber Models M-2000, M-2020, BM75, BM85 and earlier models DE-55T Replacement With 3.5MM Straight Plug The SH50ST straight mono plug stethoscope style headphones designed for professional transcription. Compatible with transcribers requiring a single 3.5 mm mono jack such as SONY, Lanier, DVI, VDI SuperStation, RTAS, Olympus, Panasonic and Sanyo. Hinged stethoscope, tubular style with white plastic ear tips and single speaker button and 3.5 mm straight mono plug.