Description Ultrasonic Siren Mini Siren 130dB protects you in danger or when you need help. The loud siren has a powerful impact and can attract attention from a distance. If you're running alone at night and encounter someone following you, you can activate the alarm to call for help. The alarm sound is very loud, so do not place it near your ear. Waterproof and Rechargeable USB Design: The personal alarm has a built-in battery that can be recharged cyclically. The red light stays on during charging and turns off when charging is complete. Charging time is only 30 minutes, and it offers long-lasting use. The personal alarm's waterproof rating is IP44, making it resistant to wind and rain and providing protection for 24 hours. Emergency LED Flashlight: The built-in LED flashlight provides quick illumination when walking in the dark and can emit an alarm to prevent you from getting lost during your journey. Alternatively, use the LED flashlight function, which flashes frequently to attract attention and signal for help, protecting your life safety. Lightweight and Portable: The dual-buckle design allows it to be attached to backpacks, school bags, wallets, belt loops, suitcases, or keychains, providing perfect self-protection features for students, women, night runners, and night shift workers. To sound the siren, simply press the SOS button twice quickly or pull the siren tab. Best Gift Choice: The alarm is individually wrapped. The personal alarm is the most intimate gift for older children, friends, and family.