Yes after "receiving position", the first start-up before take a little longer, but I had already with other radio controlled watches. The battery consumption is higher than in a normal clock; Strangely, the hands move with a weak battery often for hours, but there is no signal found. Is then placed a new battery suddenly goes again. The clock is made entirely of plastic and Plexiglas. Has the advantage of being in a fall of the wall (for example, in a school classroom "accidentally" hit by a student with a ball ...) no dangerous glass splinters. The clock is therefore also ideal from a distance of 10m still legible, for school purposes.