RELIABLE IN AN EMERGENCYIt is high quality and strictly tested to ensure that every personal alarm screams a 130dB siren as loud as a military jet taking off in an emergency. The piercing alarm accompanied by dazzling flashlights that immediately attract attention. USB RECHARGEABLE ALARM No need to worry when your personal alarm keychain runs out of power. It comes with a USB charging cable, charging time is only 30 minutes. The siren will sound continuously for 50 minutes at full power, and you can spend 1 year on standby. It is a perfect replacement for the traditional battery powered alarm. EASY TO USE, RESPOND QUICKLYThis personal alarm with dual alarm mode, quickly pull out the contact pin OR press the switch 2 times immediately to activate the alarm and the light will flash. It also has 2 lighting modes, constant light mode can light up the road in the dark hallway or at night, slamming mode can sting the eyes of the gangster. Light your way to safety and protect your safety. ULTRA DURABLE AND HIGH QUALITYOur personal security alarm keychain is made of superior durable and environmental ABS material, anti- drop, drop, crush and strain resistance, and high temperature resistance and durable, won't break under your most adverse conditions. IP44 waterproof. LIGHTWEIGHT AND PORTABLEThe personal alarm uses a snap type design for easy storage and transport. Thanks to their small size, they can be easily attached to women's leather bags, backpacks, school bags, belt loops, suitcases, keys. Provide comprehensive emergency self-protection for women, children, the elderly, girls, students and night shift workers.