Instructions: Electronic balance sleep alarm, One worn over the driver's ear The species works on the principle of electron balance The device. When the driver is driving Drowsiness may occur on the way to the head When the device is tilted downward, it will Sound the alarm, wake up the driver Alert, stimulate the central nervous system, Eliminate drowsiness and avoid traffic Accidents happen. [product name] : sound - anti - sleepy alarm [color] : black [material] : plastic + soft adhesive [size] : 7.5*5cm<img src="https://cc-west-usa.oss-us-west-1.aliyuncs.com/2057/1265988748567.jpg"> <img src="https://cc-west-usa.oss-us-west-1.aliyuncs.com/2057/885545882810.jpg"> <img src="https://cc-west-usa.oss-us-west-1.aliyuncs.com/2057/88702514671.jpg"> <img src="https://cc-west-usa.oss-us-west-1.aliyuncs.com/2057/1481863334867.jpg">

Fish - type driver drowsiness reminder