NO.128 drive alert nap alarm/anti-drowsy

128 drive alert nap alarmnap alarm,driver alarm,anti-drowsy alarm,nap zapper,anti-sleepy alert,sleep alarm,driver alert,safety alarm 1) Safe for long drive and drive at night for anti-sleepy 2) It is guardian angel for drivers 3) Small device which is clipped behind your ear and alert you if your head moves forward 4) Nap alarm is a new product that has been appreciated for its safety and value in preventing accidents Drive alert ,anti-drowse alarm, nap zapper Specification: Driver safety alarm to help prevent accidents caused by falling asleep at the wheel. Brand new anti-sleep alarm for drivers! Perfect for anyone who needs to keep alert on duty, like drivers, guards, machine operators, and even students Safe for long drive and drive at night. Especially suitable for long-distance driving or night driving It is guardian angel for drivers. Easy to use and comfortable to wear for a long time. Powerful alarm beep Work on the study of human body balance Alerts when the head loweren in the degrees of 15-20 Powered by 1 x LR44 button cell battery (included) Colour: blue, black size:6.5*5.0*1.3mm