The Nap Zapper is the guardian angel for drivers.This product can protect you and your passengers from accidents due to drowsiness.The Nap Zapper is worn over the ear and has an electronic position sensor.When your head nods forward,it sounds a loud alarm/vibration to instantly awake you and alert your passengers;

And this is ideal for students burning the candle at both ends,or for drivers on long stretches of boring road that you know too well.Also security guards,machine operators,or even those watching telly and wanting to maintain correct.

The spec as below: