Security Alarm [New Upgrade Dual Mode Activation] Water-resistant, 130 Decibel Loud Volume, 500+ Days Ultra-Long Standby, Environmentally Friendly Resin Integrated Molding Shell for More Robust Security Goods, USB Charging Supported, All-Generations Children, Women, Students, Elderly Self-Defense Goods [Black 1 Piece] New, Unused 130 Decibel High-Pitched Security Alarm, Powerful Deterrent: Featuring a 130-decibel sharp siren and LED strobe light, it instantly produces a loud sound and visual disturbance, effectively deterring potential threats. Ideal for students, women, and night shift workers to call for help at any time. Integrated Non-Toxic Eco-Resin Shell, Sturdy and Drop-Resistant: The integrated body, made of high-strength, non-toxic, and harmless eco-resin, weighs only 28g and is robust and durable, with excellent drop and abrasion resistance. This lightweight security item is easy to carry and suitable for everyday use and outdoor activities. Recyclable Charging Supported, Ultra-Long Standby: The built-in lithium battery can be charged for 30 minutes via USB, with a standby time of up to 1 year. With a low battery warning, there's no need to replace batteries. The alarm lasts for 90 minutes, and the LED stays on for 3 hours, making it an eco-friendly and convenient item. Two Activation Modes, Multi-Functional LED Light: Quickly pull the pin to immediately sound the alarm, or double-press the button in your pocket for covert activation. The high-brightness LED light supports constant illumination and burst flash, illuminating the path in the dark or stimulating the eyes in an emergency to pinpoint your location, serving as a self-defense tool.