Anti-sleep doze nap zapper drowsy alarm sound alert for car driver

Driver safety alarm can help prevent accidents caused by driver 39 s sleep when driving it is especially suitable for long distance driving or night driving ergonomic design and comfortable feeling rubber fits comfortably behind either ear right ear is best for drivers long distance truck drivers road trip safety late night workers security guard etc specification type anti sleep driver alarm material plastic quantity 1pc item color black battery 3 lr14 button battery net weight 0 03kg package include 1 x anti sleep doze nap zapper drowsy alarm sound alert for car driver