Description: Place it behind the right ear and alarm when the head is lowered 15 to 20 . Especially suitable for long-distance driving or night driving. The driver safety alarm can help prevent accidents caused by drivers' sleep while driving. Especially suitable for long-distance driving or night driving. It is the guardian angel of the driver. Easy to use and comfortable to wear for a long time Specification: Color: Black Weight: about 30g Size: about 5*7.5cm/1.96*2.95in Instructions: wear it on the right ear correctly Packing List: Alarm system*1 See more product details 1.Easy to Use: Drive Fatigue Alarm is made of lightweight material, compact and easy to carry, fits the ears, place it behind the right ear and alarm when the head is lowered 15 to 20 . 2.Comforatbale to Wear: Anti sleep Alarm Drowsy is the guardian angel of the driver, which is very convenient to use and comfortable to wear for a long time. 3.Ensure Safety: Anti-Sleep Reminder Drivers can ensure the safety of driving because it can help prevent accidents caused by drivers' sleep while driving. 4.Widely Used: Car Driver Sleep Reminder has a wide range of applications, it is suitable for students who like to bow their heads, sit at a table or drive at night, drive long distances and drive after drinking. 5.Excellent Gift: You can choose Car Sleep Reminder Tool as a great gift for your friends and families to make sure their safety of them, and it is very practical. _x000D_