An alarm emitting 130 decibels of noise can significantly disorient anyone around it. Disorienting an attacker with a personal alarm will make them stop and brace themselves from the noise, giving you an opportunity to escape. The noise will also alert other people of your location, can . Features -Material: Plastic -Size: About 7.50X3.50X1.50cm/2.95X1.38X0.59inch -Working voltage: 3.7 (V) -Working current: 100 (mA) -Volume: >=130 ( ) -Fine workmanship and beautiful appearance, ensure its popularity and utility. -The emergency personal siren can make a loud sound to attract the attention of other people. -It is practical for the elders, children and girls when they have emergency. -The product is made of and fine craftsmanship. -Also can be used as alarm apparatus for women when they are outdoors. Package list: 1 x Emergency Security Alarm