Built-in super-large capacity storage hard disk, files can be uploaded and downloaded at any time through APP operation; Since the product needs 24 hours of standby and the hard disk has a large amount of heat dissipation, we design the heat dissipation channel of the product through the natural phenomenon of rising hot air. The metal shell has thermal conductivity and also provides good heat dissipation performance to the product. The metal shell is stretched and formed without screw holes on the surface, thus maintaining the integrity of the product.