MELLA is an all-in-one kid's clock and sleep trainer designed specifically to keep your kid in bed longer. Parents set the desired sleep time and wake time for their child and MELLA will teach the child when it's time to sleep and when it's time to wake up. When it's time for bed, MELLA goes to sleep too. When it's time to wake up, MELLA glows green. Unlike other sleep trainers on the market, MELLA features a "Play Period" as well, where half an hour before the wake time, MELLA will glow yellow, signaling that it is almost time to wake up.