The Sensa TONE is an ultra simple, yet powerful digital Pelvic Floor Stimulator (PFS). Compact, stylish & designed for use by women of all ages to help strengthen pelvic floor muscles.PFS helps to strengthen the pelvic floor by passing mild electrical pulses via an internal vaginal probe to contract & relax the pelvic floor muscles. Women with strong pelvic floor muscles enjoy greater control over their bladder, increased vaginal tone & greater sensation during intercourse. One in three women suffer from some form of incontinence during their lives. It occurs most commonly after childbirth. Pelvic Floor Stimulator (PFS) can NOT be used during pregnancy but you can use it from 12 weeks after the birth. Requires 2 X AAA batteries (included).