Ultrathin Personal Alarm Waterproof Replaceable Battery Strobe Light Ultra-Lightweight 0.8 oz Bulky-Free Keychain SOS Siren Women Student Safety. Emergency 130db Rainproof Hiking Alert. Black

[Bulky-free: Ultra-lightweight | 0.8 oz] Slim profile of only 0.3 inches, nearly as thin as an iPhone. Effortless everyday carry for travel, even by air. A minimalist, stylish bag charm personal safety alarm for women, girls, college / high school students, children, kids or night runners. A powerful alarm to deter threats and quickly attract attention for help when you need it mostespecially when alone. [Water-Resistant Design] Protects against rain and splashes. When you're caught in the rain during your commute, there's no need to worrythe alarm attached to your bag won't be damaged by water. Ideal for Hiking, Camping, Walking, Jogging. It can also function as an animal repeller (Bear Alarm Deterrent) when you're outdoors. [Easy One-Hand Operation | Kid-friendly] Simply pull the PIN to activate the alarm when clipped onto any purse, bag or backpacks and belts. Especially suitable for young students and children quick activation in an emergency. [Ear-piercing Sound & Strobe Light] This SOS Emergency Keychain Siren emits a very high-pitched, 130db loud piercing sound and lasts 30 minutes until the batteries die.

The strobe light activates with the siren, creating a powerful visual signal at night. Re-insert the PIN to stop the siren. [User-replaceable Battery] Powered by a built-in coin cell battery with up to 5 years of standby time. You can easily purchase the needed button cell (CR2032 or LIR2032) from local stores. More cost-effective than disposable alarms.
Tip: When the siren sounds weak, replace the batteries immediately