The product uses the traditional Chinese cultural element-the rattle, refined the shape, integrated the modern design style, and borrowed the design of a certain meter, so this product was achieved. The user group is college students. Facing the hot summer, I stayed in the dormitory. The huge heat brought by the black opening of the mobile phone, this product solves this problem very well. The magnetic base can be adsorbed on the iron frame bed, adjusted to a suitable length by pulling the telescopic rope, and the tuyere blows to the mobile phone to dissipate heat. At the same time, the product can also bring a good blowing experience for outdoor travel.