For 0-3 MonthsVisual Developmental Characteristics:With black and white vision,sensitive to the objects and graphics in contrast of black and white. | For 3-6 MonthsVisual Developmental Characteristics: Increasingly strong perception towards to color and shape of items, especially red color. The baby begins to do the visual transition from black and white to color. | For 6-12 MonthsVisual Developmental Characteristics:On color visual period, stereoscopic vision gradually improves, baby prefer to see patterns with strong color comparison, slowly feel stereopsis like far and near, left and right, tall and short from of things, fast-tracking the moving things. | For 12-36 MonthsVisual Developmental Characteristics:The fast development of visual observation and cognitive ability. With a certain of resolution capacity the baby can recognize more and more objects on increased training. |