Waterproof and antimagnetic metal aluminum cassette metal OZX-8511 [product introduction]: domestic high quality alumina [features]: clamshell type, strong and durable! The external light feels great! [Color]: multiple colors (colors can be customized). Mixed Batch supported [material]: metal aluminum oxide shell. [Size]: Length: 11cm width: 7.5cm thickness: 2cm (it is recommended that you actually compare it. It may be different only by imagination.) [Accessories]: Comes with OPP bag, soft black paper box packaging. [Explanation]: clamshell type, a variety of color products, metal aluminum oxide shell, metal material on the surface, acrylic material inside. Small and exquisite, stylish and generous.?? [Usage]: it is the best choice for successful business people to store cards