• 【USB Rechargeable Battery】: Personal alarm siren is made of rechargeable lithium battery, not button battery. Don't need to replace the battery, directly use the usb data cable to charge and charge time is only 30 minutes, then you can get 1 years in standby
• 【Self Defense】- What ever it is, just pull the pin，With ear-piercing sound to draw others’ attentions even 300 yards away when your'e in danger. Up to 90 mins of continuous sound to ensure emergency use. It will to protect your safety.
• 【SOS LED Light with Alarm】Requires no training or skill to operate. Equipped With high-intensity LED Lights. Extremely Loud . Military-Grade Durability (Weatherproof). very durable and Long service life!
• 【Suitable for Everyone】 - Get the help you need quickly. Commonly used by seniors to call for help in case of falling, feeling unsafe, physically threatened, medical emergencies, accidents, or allergic reactions. Great gift for parents, college students and everyone that works evenings. Wonderful defense siren for everyone.

*color will be sent in random