USB Rechargeable Battery: Personal alarm siren is powered by a rechargeable lithium battery. You will never need to replace the battery, directly use the provided usb cable to charge, charge time is only 30 minutes but will give you 1 years in standby!
130 dB Safety Emergency Alarm: With ear-piercing sound to draw others’ attentions even 300 yards away when you're in danger. Up to 50 mins of continuous sound to ensure emergency use.
2 Ways to Use: You can pull the contact pin out or press the switch 2 times quickly, to activate alarm
LED Emergency Flashlight: Light bulbs are bigger and brighter than flashlights from a traditional security alarm
Lightweight & Portable Alarm Keychain: This Self-Defense alarm can be attached to a purse, backpack, keys, belt loops, and suitcases. It can also be brought onboard a plane, really convenient, fit for Students, Joggers, Elderly, Kids, Women, Night workers.
Package Dimensions: 5 x 3.3 x 1.3 inchesItem Weight 3.2 ouncesBatteries: 1 Lithium ion batteries required. (included)