A PROSTATE RING (1) HAS A KNITTED COLLAR BODY AND MULTIPLE MAGNETIC ELEMENTS (12). THE KNITTED COLLAR BODY IS KNITTED BY CONDUCTIVE FIBERS AND FLEXIBLE FIBERS AND HAS TWO SIDE EDGES (112L, 112R) ROLLED ALONG AN INNER SURFACE (114) OF THE COLLAR BODY TO FORM TWO ROLLED SEGMENTS (2L,2R) ABUTTING WITH EACH OTHER AND MULTIPLE SEWING PORTIONS (14). THE SEWING PORTIONS (14) ARE MOUNTED SEPARATELY ON THE COLLAR BODY TO SECURE THE TWO ROLLED SEGMENTS (2L,2R) TOGETHER. THE MAGNETIC ELEMENTS (12) ARE MOUNTED IN THE COLLAR BODY BETWEEN AN OUTER SURFACE (116) OF THE COLLAR BODY AND THE ROLLED SEGMENTS (2L,2R). ACCORDINGLY, THE PROSTATE RING (1) CAN IMPROVE THE BLOCK CIRCULATION IN AN EXTERNAL GENITAL ORGAN OF A MAN. FIG. 3
