Abstract: This invention discloses a wristwatch capable of storing and transmitting data of computers. The wristwatch of this invention comprises a timing indicating component, a watch case, and a watch band for fixing the wristwatch to people's wrist, wherein, said wristwatch further comprises a circuit board assembly and a USB connector assembly. The internal structure of the watch case of the wristwatch of the present invention is well sealed, so that the electricity property of the internal elements can be ensured, and the elements for storing and transmitting data of computers can be secured and protected, while the appearance of the wristwatch remains concise and natural.