Effectiveness of eCoin at Sensory and Subsensory Amplitudes

The goal of this prospective, multi-center, double-blinded randomized controlled is to learn about effectiveness and QOL with eCoin at two different amplitude settings in subjects with urge urinary incontincence (UUI). The main question it aims to answer is: * The reduction in UUI episodes per day on a 3-day voiding diary in both groups after 3 months of therapy Participants will be implanted with the eCoin device and randomized to either a sensory or subsensory stimulation group and complete voiding diaries and patient reported-outcomes through 3 months of therapy. After 3 months, subjects will be unblinded and reprogramming will be offered. Subjects will be followed for an additional month to a total of 4 months.