| 摘要 |
PURPOSE: A vibration timer key is provided to enable a user to conveniently sleep for a predetermined time without the alarm system of a mobile phone. CONSTITUTION: A body(10) can lock or unlock a locker using a key module and a band for wearing on the wrist or ankle of a user is connected to both edges of the body. A timer is installed in the body is used for establishing a time. A vibration module is installed in the body and generates vibration at the time established by the timer.
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