Clock Master This is an attachment for Kodomo Challenge Step. It helps children learn the concept of what time it is and half past the hour. Benesse Shimajiro Edutoy Functionality confirmed in January 2026. It worked properly. There is black staining on the back. (See photo 3) It does not affect the operation, but please refrain from purchasing if you are concerned. It runs on two AAA batteries. For safety, the batteries will be removed before shipping. This is a used item that has been used by a child. I apologize if I missed anything. Please only purchase if you understand! Fun clock learning toy for children, with instructions. - Model: Clock Master - Color: Yellow - Accessories: Instruction manual - Condition: Used - Manufacturer: Benesse Type: Clock Popular Keywords: Kodomo Challenge Character: Shimajiro