ITEM NAME:1Pc Alarm Vibrate Anti Sleep Drowsy Alarm For Drivers Security Sleeppy ME Descriptions: Rubber hook fits comfortably behind either ear..Note: Electronic balance anti-sleeping alarm, which is worn on the driver's ear, is a device that works by using the principle of electronic balance. When the driver is sleepy and his head tilts down 15 degrees, the device will give a sound alarm, arouse the driver's alert, stimulate the central nervous system and eliminate sleepiness, so as to avoid traffic accidents.
