FEATURES:

• Nap zapper anti-sleep alarm
• Low power consumption
• Powerful alarm beep
• Work on the study of human body balance
• Easy to use and comfortable to ware for a long time
• Especially suitable for long-distance driving or night driving.

Usage:

Wear it behind your ear. Shift it to the right to turn it on. When your head nods forward more than 30 degrees, it'll sound alarm to wake you up. Shift it to the left to turn it off.
 

Functions:

• Help prevent accidents caused by sleepiness or distractions at the wheel.
• Perfect for anyone who needs to keep alert on duty, like drivers, guards, machine operators, and even students 
• Powered by: 1 x 3 (LR44) button batteries (included)
• Package: 15 X 11 X 3cm / pc
• Net Weight: 19g / pc