130dB loud sound: This self-defense keychain alarm emits a loud sound to attract attention from a distance, helping to deter potential threats and alert nearby individuals. LED design: This safety alarm keychain features an LED light to assist in low-light conditions. Ideal for night running, walking pets, traveling, hiking, camping, and other outdoor activities. Portable design: The personal safety alarm has a compact size and can be attached to a keychain, backpack, or handbag. Suitable for students, elderly individuals, children, women, and night workers. Easy to use: The alarm activates when the safety pin is pulled out and stops when the pin is reinserted. Specification: Material: ABS Size: 67x45x25mm Power supply: 3 x LR44 button batteries (included) Package includes: 1 x Safety alarm Note: Due to variations in monitor displays and lighting conditions, the actual color of the item may differ slightly from the images shown. Please allow 1-3 cm measurement deviation due to manual measurement. (1 inch = 2.54 cm) Thank you for your support.