The stethoscope is the culmination of pure case for this purchase: It consists of wooden parts, which are connected with a kind of cord. At the point where the children want to put part of his ear, plastic plugs are mounted. This fall when you can easily (without force) it attracts from.
Result: Open hard plastic ends (like a shoelace), which will hopefully put in ear of any child. The stethoscope can not do anything. You should dispose of to damage to the child to avoid it immediately.
How this toy has been able to obtain authorization in the German market, is beyond me ...