Description:<br />Built-in high senstive sensors, when you nap and lower your head, it will send out the alarm automatically<br />Because the voice is in your ear ring, so for other people the impact is not big<br />The voice as your head Angle different a short and long time alarm<br />Avoiding high temperature and humidity storage<br />To check whether alarm properly set, when take it with wrong posture, will send out &amp;quot;beep&amp;quot; sound of<br />It will alarm with the right ear<br /><br />Feature:<br />Type: Sleepy reminder<br />Material: Plastic<br />Principle: By using the theory of level<br />Color: Random<br /> <br />Method of use:<br />Switch on, hand on the ear, can according to your posture adjustment in the point of view of the ears hang until you most habit to <br />adjust to the driving position.<br /><br />Package:<br />1 X Sleepy reminder<br /><br />Note: <br />Products and images may exist chromatic aberration, please understanding!<br />Compare the detail sizes with yours, please allow 1-2cm differs due to manual measurement!