Feature: 1. 130DB Loud sound: This self-defense keychain alarm can make loud sound to draw others' attention even at a far distance, which can effectively scare attackers in danger and help seek assistance from people around. 2. LED Design: This safety alarm keychain also has a LED light that can help you in the dark. Suitable for night running, walking dogs, traveling, hiking, camping, and other outdoor activities. 3. Portable Design: The personal alarm has a compact size and can be attached to a keychain, backpack, ladies' bag, etc. It is suitable for students, elderly, children, women, night workers, and more. 4. Easy to use: The alarm will activate when you pull the contact pin out, and the sound stops when the pin is reinserted into the device. Specification: Material: ABS Size: 67x45x25mm Power Supply: 3 x LR44 button batteries Package Included: 1 x Safety Alarm Note: 1. Due to different monitor and lighting effects, the actual color of the item may slightly differ from what is shown in pictures. 2. Please allow 1-3cm error due to manual measurement. 1 inch = 2.54 cm Thanks for your support.