USB RECHARGEABLE: - You don't need to change batteries anymore. This alarm keychain is equipped with USB charging cable, you can get it charged using usb cable. And charging time is only 30 minutes, standby time can be up to one year, charging indicator lights red, charging indicator Extinguished. 2 ALARM MODES: - Dual mode alarm mode: Quickly pull out the stylus or press the switch 2 times to trigger the alarm, the sound can reach 130 decibels, and the sound can continue for 50 minutes continuous glitch alarm. 2 LIGHTING MODES FLASHLIGHT: - The personal security alarm has a built-in mini LED flashlight. It has two modes. The constant light mode can illuminate the road in the dark corridor or at night. The slamming mode can sting the gangster's eyes. , locate your location faster. IP44 RAINPROOF & WIDELY APPLICATION: - The Alarming keychain is made of strong ABS material, anti-drop, IP44 waterproof (proof rain, can not be placed in water). Provide comprehensive emergency self-protection for women, children, the elderly, girls, students and night workers. EASY TO CARRY: - The personal alarm is designed with a snap-on design for easy storage and carrying. It can be attached to women's leather bags, backpacks, school bags, belt loops, suitcases, keys, dog belts, etc. The alarm can be easily attached to your bag, keychain or wallet for ease of use.