1: It has a relatively small number of pieces that are easily assembled. It is a suitable choice for beginner users without previous experience.
2: It has a low level of construction difficulty and is suitable for users with little experience in model building.
3: It has a moderate number of pieces and assembly parts with more detail. Suitable for users familiar with model building.
4: With a large number of pieces and great detail in the assembled parts, it has an increased level of difficulty in construction and is suitable for users with experience in model building.
5: Models with high levels of difficulty that require special handling during their assembly. Intended for users with extensive experience in model building.
