Description:

Anti-drowsy nap zapper for drivers works on the study of human body balance.
Perfect for anyone who needs to keep alert on duty, like drivers, guards, machine operators, and even students
Nap Zapper alerts when the head loweren in the degrees of 15°to 20°

How to use:

Turn the power on by pressing the ON / OFF switch , and wear it on right or left ear.
Nap Zapper emitts "Bi-Bi-" alarm when driver tends to fall asleep with his head lowered; there is no sounds emitted when driver keeps normal driving status with eyes looking forward
Colour: Black and Blue (Optional)
Dimensions: 69mm x 28mm (L*W)
Weight: 20g

Package Comtents:

1 x Anti-Sleep Nap Zapper