Loud 130dB Personal Safety Alarm- Our police-approved personal siren can emit a super piercing sound of up to 130dB, drawing attention even from a great distance away and allowing you to seek help in time for trouble or danger.Dual Alarm Mode- The alarm can be activated by pressing the SOS button twice or by quickly pulling out the contact pin. The advantage over other products is that it stays attached to the pin so it will not be easily dropped or thrown away.USB Rechargeable Battery- Unlike other products that require battery replacement, there is no need to worry when your personal alarm runs out of battery, simply charge it with the USB cable provided. On a single full charge the alarm will sound continuously for 90 minutes, the light will last for 120 minutes and will flash for an amazing 300 minutes.Multi-functional LED Light- Our personal security alarms come with a bright LED torch built in, which has two modes, a constant light mode to light your way in dark corridors or at night, and a flashing mode to sting the eyes of thugs and locate your position faster.Protection for All- Safe and secure personal alarm keychain made of sturdy ABS material for extra durability. Provides perfect emergency self-protection for people of all ages such as women, children, elderly, girls, students and night shift workers.