Feature:1 130DB Loud sound: This self-defense keychain alarm can make Loud sound to draw others attention even in a far distance, which can effectively scare attackers in danger and seek people around for help 2 LED Design: This safety alarm keychain also has a LED light that can hel you in the dark Suitable for night running, walking dog, traveling, hiking, camping and other outdoor activities 3 Portable Design: The personal alarm has a portable size, can be attached on keychain, backpack, ladies bag, etc It suit for students, elderly, children, women, night workers and so on 4 Easy to use: The alarm will be activated when you pulled the contact pin out, and sound will disappear when the pin is reinserted to device Specification:Material: ABSSize: 67x45x25mmPower Supply: 3 x LR44 button batteriesPackage Included:1 x Safety AlarmNote:1 Due to the different monitor and lighting effect, the actual color of the item may be slightly different from the color shown on the pictures 2 Please allow 1-3cm error due to manual measurement (1 inch = 2 54 cm)Thanks for your support :)