... poster/calendars are:We do all processings in-house ,including electronic IC/PCB design, offset colorful printing , molding,die ... too from our good production and services.Item Name: 3D Electronic Poster ,Educational Poster, Kids Early LearningTHe chart Encourages children ... *42cmBox Size: around 15.5*12.5*4 cmBattery: (Not included). 1. Material: PVC , Paper, and electronic elements, IC, PCB, etc. ...