... &D team Have own patent of learning machine Quality guarantee Feature:10 games included.Game from memory the analysis,the imagination,the ... .To broaden your knowledge During growing-up, key points of learning and workingdiffers in their development. For instance, some people's ... and attention become poor with time goes by.brain trainer learning machine models: LK-G883, LK-G888, LK-G898, LK-G892 ...