Clinicallyproven to give a 49% increase in core abdominal strength. The most powerful Slendertone Flex to develop your abs with intensity levels up to 130. 10 programmes including Sports Pro and Ab Crunch for a more intensive workout. Smart programme monitors progress and advances you automatically. LCD screen shows programme, time and intensity to track progress. Includes 2 sets of pads, batteries and a travel pouch. Easy to use medical grade pads for comfort convenience with no wires or messy gel. Fits waist 27-47in (69-119cm). Pads must not be placed over recent scar tissue, varicose veins, enlarged moles or areas of injury/recent wounds. Not suitable for people who suffer from heart disorders, diabetes, epilepsy, multiple sclerosis or for pregnant women.