Description:

Drive Alert Nap Zapper Anti-Drowsy Alarm for Drivers
security guards machine operators and even students who need to work on their postures

Features:

A driver's Guardian Angel.
A safety aid for all drivers and machinery operators.
Works wonders for security guards and students.
No wires or plug-ins.
The angle of the wearer's head causes the alarm to emit an instant wake up signal. Head angle can be adjusted. Great gift for truckers, travelers, and commuters. On/off switch saves battery when not in use.
Auto alarm activation on head tilt
Alarm emits noise to alert passengers
On/Off switch battery saver
Batteries: 2 X button cell(included), L736 etc.
Warranty period: Six Months

Correct Usage：
On the device is a little lever switch, shift it to the right on.
Test that it is working properly by tilting it forward, if it beeps then it is working state.
Place behind your right ear and adjust, it should be placed correctly for effectiveness. Your head should not more than 30 degrees ( the less the better), before it beeps.
When the device is no longer required move the lever towards the word OFF
Other Function:
The anti- drowsy-larum is not only designed for drivers
it's perfect for people who need to be on full alert while on duty such as security guards, machine operators and even students who need to work on their postures