100% brand new and high quality
Put it behind your right ear, when your head nods forward, an electronic position sensor will sounds a loud alarm to instantly wake you and your passengers
Especially suitable for long-distance driving or night driving
ON/OFF switch
Easy to use and comfortable to wear for a long time
Powerful alarm beep
Battery inside
Color: Black,white ,yellow,pink,blue
Quantity: 1pc
Packing list:Anti-Sleep Device x 1 pc
