“Purchased this watch, and as per the instructions, I place it near a window at night. It has no problem catching the WWV radio time update each night at midnight here in Louisiana. It is, therefore, always dead on time. Note: the ad says this is a solar powered unit-it isn't. Some waveceptors are, but not this model. But, so long as it catches an update and until the battery needs replacing, you don't have to do a thing to thing watch but wear it. What more can you need in a watch?”