Made of plastic material, easy to use. Mini size, portable design, all of that make you use it more freely. It is practical for the older, children and girls when they have an emergency. Be it on an unfrequented street, in a dark car park or near the home, the alarm will always be . Features - Material: ABS. - Size: 6.80X5.60X1.60cm/2.67X2.20X0.63inch. - Note: included 3 button batteries, 125-130dB. - The emergency personal alarm can make loud sound to draw people's attention, useful and reliable. - It can effectively scare attackers in and seek people around for help, practical and excellent. - It will be your good helper when you have troubles or need help, simply pull down the to activate the handheld alarm, easy to use. - Compact and lightweight, it can be attached on purse, bag, schoolbag, keys, easy to carry. - Suitable for joggers, elderly, disabled, night workers or someone who lives alone, especially for the women. Package list: 1 x Portable Women Heart-shape Alarm