Rechargeable alarm: Parrotias self-defense alarm adopts a 3.7v 130mAh lithium battery.
130dB Loud Siren: The safe personal alarm can make a loud sound to draw others’ attention even 1000ft away. And the continuous ear-piercing sound can last 40 min. 
Mini Size: The size of the personal alarm is 68.8*26*17mm, and the weight is only 18g, small lightweight, and portable.