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TOZO Crystal Buds' charging case with the transparent crystal style and bean shaped earphones are firstly adopted, which fully explains the perfect combination of nature and technology and the soft beauty of curves. Two color injection molding for the light case: the crystal outer layer, and the semi transparent bottom layer by 70% - 80% injection molding. Ensuring clear digital display, the internal parts are hidden to create a transparent style. The compact shape brings a comfortable grip. It is lightweight to fit the curve of inner contour of ear.