Sony 1-505-521-11 HEADPHONE( MDR-023 ) HEADPHONE( MDR-023 ) Works with the following models: Sony ICFCD2000, Sony ICFCD2000S, Sony SRF56, Sony SRF59 Sony TCS30D, Sony WM-EX152, Sony WMEX190, Sony WM-EX192, Sony WMFX141, Sony WMFX193