Light sensor music box with Japanese instruction manual

This kit uses a dedicated IC and light sensor to make a device that a melody appears in response to the brightness in peripheral area.
The device is such that, once it is put in a place under no light circumstance such as a closed box and then, if it receives a light, a melody would appear.
Built-in melody:
Jingle bell & Wish you a merry Christmas
* This kit requires some soldering works.

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