What kind of screwdriver is small enough?

[*MemetchiLuv*]

Does anyone know what kind of screwdriver you need to open up the Tamagotchi so you can debug it? I can't seem to find anything small enough...

 

[Afterglw]

I went to Walmart and asked the Jewelry department if they had any eyeglass repair kits, and the screwdriver that was in the kit was small enough for mine