just as another reviewer have state - it run three minute fast , and resetting do nothing to correct that problem . we , just like they , mentally subtract the three minute from the display . since get the clock , w have have we household power go out several time during storm , and when the power return - WOW it keep its own time during the outage - really great ! what be more - it can be see easily from anywhere in the darkened bedroom - and even more - the display be not too bright in the dead of the night . another annoyance , though , be the flash colon between the hour and minute display . we have put black mask tape over they , which do a good job of hide they when look straight onto the display - however they be still visible from a angle . Wish we could turn it off .