Features: 1.Place the alarm on the right ear and open the switch to check if the set alarm is appropriate. When it is not properly positioned, it will sound a "beep" to remind you. 2.Compact and lightweight, it is easy to carry and use. 3.Exquisite and considerate design, fit for your right ear perfectly. 4.Constructed with ABS material, durable in use. 5.Once you can't help but fall asleep, the ear bell will emit a crisp "beep" sound, which makes you feel refreshed to avoid accidents. Specification: Features:_x000D_ _x000D_ Place the alarm on the right ear and open the switch to check if the set alarm is appropriate. When it is not properly positioned, it will sound a "beep" to remind you. _x000D_ Compact and lightweight, it is easy to carry and use. _x000D_ Exquisite and considerate design, fit for your right ear perfectly. _x000D_ Constructed with ABS material, durable in use. _x000D_ Once you can't help but fall asleep, the ear bell will emit a crisp "beep" sound, which makes you feel refreshed to avoid accidents. _x000D_ _x000D_ Specification:_x000D_ Condition: _x000D_ Material: ABS_x000D_ Color: Black/Blue/Pink/White (optional)_x000D_ Battery specifications: AG13X3 (Universal Button Battery) One battery service life is about 6 months - 24 months._x000D_ Instructions: Switch the anti-sleeping alarm to the "ON" and hang it on your ear. Once you can't help but fall asleep, the ear bell will emit a crisp "beep" sound, which makes you feel refreshed to avoid accidents. It can also be used for students at home, sitting in the wrong position during homework. A beep will sound to remind the students._x000D_ _x000D_ Package List:_x000D_ 1 * Anti-Sleep Reminder_x000D_ _x000D_ Note:_x000D_ 1. Open the switch and hang it on your ear. Adjust the angle on your ear according to your sitting position until you adjust to the driving position you are most accustomed to. Unscrew the screws on the cover when changing the battery, and open the rear plate._x000D_ 2. Avoid high temperature and wet storage. PackageList: Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Sold by-Minnanxin