I chose this clock over several others available mainly because it displays the time aswell as showing the light to give the cue to get up; I wanted our 3 year-old to have an actual clock, with numbers to see, rather than just a light and picture e.g. the Gro-clock or KidSleep clock. It does everything it claims to do and he understood straight away to wait for the green light. The drawbacks that I have found are minor but annoying! Mainly, the battery compartment is closed with a TINY screw which must be opened with a screwdriver, and the screw was done up so tightly when it arrived the thread was damaged and turning it with the screwdriver then damaged the top of the screw too, so now, brand new, it cannot be done up again. Second, the changeable face plates fit onto the front of the clock with a nice easy latch, but the plate that was already on the clock was also stuck on with sticky tape, which when removed left a sticky smear across the front of the clock. I have picked the smear off but it was an annoyance! I'd buy it again but wish they had given these details more attention!