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: ABS Size: 67x45x25mm Power Supply: 3 x LR44 button batteries Package Included: 1 x Safety Alarm Note: 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 :)