Introducing the "Strongest King Encyclopedia Series" design alarm buzzer! The buzzer sounds when the main unit is pulled. The buzzer stops when the pin that was pulled is pushed back into the main unit. Carry it for your child's crime prevention measures to reduce risks on the way home from cram school or commuting to school. It's a useful item in various situations, such as for women commuting at night and preventing snatch-and-grabs, and for emergencies during travel, camping, and mountain climbing! Thank you for viewing.