5 x Anti-Drowsy Driver Alarm
Alerts when the head lowers down to 15°-20°
Easy to use and comfortable to wear for a long time
Suitable for long-distance driving or night driving
Compatible with the study of human body balance
Comes with a light switch for night viewing
Has a nap zapper anti-sleep alarm
Low power consumption
Powerful alarm beep
Comes with an on/off
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