| 摘要 |
<p>An alarm wristwatch including a watch, a strap having an extent, a mechanism for increasing and decreasing the extent of the strap, and a circuitry for controlling the mechanism to intermittently increase and decrease the extent of the strap, thereby increasing and decreasing a pressure of the strap on a user's wrist, resulting in attracting the user's attention, while not attracting other persons' attention.</p> |
