【Warning: Extremely Loud】 With a 140dB alarm, it immediately attracts attention and protects you upon activation. (Caution: This sound can damage your hearing if listened to for an extended period. Please be careful when testing this product.) 【Portable】 Comes with a ring chain, making it easy to carry. Designed as a small accessory, it can be attached to bags and purses. 【Suitable for All Ages and Genders】: Perfect for children going to school, those who commute or plan nighttime training, or mothers and fathers who enjoy walks. Anyone can easily use it if needed. 【With LED Light】 In addition to being a security alarm, it can also be used as an emergency light. It can be a useful rescue tool when outdoors. 【Energy-Saving】 Powered by three LR44 button batteries. A protective seal is inserted; please remove the seal before use. If not using for an extended period, storing it with the seal inserted can extend battery life.