I would have given five stars, but I have now had 2 faulty e-pens (second generation). One of which I telephoned to report and a new one was sent out (battery number H60260351B ep2) First class customer service! However, when this is charged, after 3clicks, green light, press for white light and get red flashing light. This also happened with the first ep2. Worked fine for about 4 or 5 charges, but battery life very short and then refused to work at all. I have a first generation e-pen, which is still working successfully ( battery number H51250067B May 15). I still have second ep2. (Should I return it or phone up again?)