Want to get your children to understand when it's time to get up? Simple!- stay in bed until you see the sun. The Groclock uses fun images of the stars and sun to communicate when to go back to sleep and when it's time to spring out of bed. The Gro-Clock includes a feature allowing parents to choose whether or not to display the digital clock during the usual ‘stars to sun’ countdown. So for older children, they can now start to learn digital time, as well as look for the arrival of the sun.