I bought this clock (preloved) for Javan. It's neither too hard nor too easy for him. Just right! So he only learn the exact hour and half past time. Eg. 12, Twelve o'clock and 12.30, half past Twelve o'clock. It has 2 mode, Javan move the hour and the minute hand, the clock tells the time. Another is the clock say the time and Javan move the hour and minutes hand, which is more interactive, more fun. He's having fun! He learn it pretty fast. At first we tell him where to move the clock hand, after that he get the hang of it. He's able to tell us half past Twelve is 十二点半.