Through the early understanding of product functions and operations, it is concluded that the left and right operations are easier to use and more reasonable. The appearance of the product is slightly changed on the basis of the cuboid shape. The lower button and the indicator light at the top are highlighted in the turning point of the shape, and the middle is closed in shape to make the product look lighter and thinner. The main body uses bright acrylic with frosted plastic material, which is visually contrasting and has a more technological sense.