Very good stimulation device, provided it is used in the early pains. It effectively relieves. Take the time to make the one hour program. So do not hurry. I took in addition a set of electrodes and the purchase of additional batteries. Battery life is more than correct. I am over 10 hours and still the origins batteries. The electrodes, they are planned for approximately 40 uses. But the fact that I keep one hour! Duration, it risks being reduced. I would comment later.