HIGH FREQUENCY SELF-DEFENCE ALARM APPARATUS

摘要

PURPOSE: A portable high frequency self-defence alarm apparatus is provided to generate a high frequency alarm sound which sufficiently attracts interest of people around a user, thereby embarrassing a criminal. CONSTITUTION: A case(110) has a dice shape. A speaker is installed in the case. The speaker includes a vibration plate. A battery is installed in the case to supply power for operating the speaker. An alarm operating unit(140) is installed in an edge of the case. One end of the alarm operating unit has a ring shape. A pin(141) is separated from the alarm operating unit.