This review applies to the predecessor: Promaster Super Skyhawk Citizien JY0020-64E. The clock must be distinguished from the new model hardly, therefore, allow me also to compare the clocks with each other. The clock I have now already 2 years. And I must say, the clock keeps its promises! Citizen stands for good quality and has proven also by the two years. The solar battery still works great and in the winter I have not had any problems with the few sunbeams experienced. Whether you most of the time has a long sweater on, the clock is ticking and ticking. The functions still running great and I can not fault at the clock. Whether Stop function, alarm clock, calendar or Count down, I use it all and as I said no problems experienced with it. The only thing where I had problems with, was at the hub, which had set itself for some basic Probably because of a few grains of sand ... After a few weeks the clock had somehow repaired itself so that again everything works fine , What more do you want? 5 stars there with me !!