Check the listing for details. Wearable Personal Safety Alarm Egg. 130dB. 23A 12V Battery. Blue.. Condition: New. Listed at 29.00 USD. Stay safe and protect yourself with this personal alarm keychain. Simply remove the needle and loud siren will alert people near by. Features: *Personal alarm helps to shock and deter an attacker and draw attention in times of need, used as protection. *High 120-130dB self-defense personal alarm sounds great, and can take attention for help when someone is in dangerous situation. The products comes with 1pcs 23A 12V Battery *Small and portable, Suitable for women, kids, elderly explorers It can be attached to a backpack, purse or keychains for convenient access. *Easy for using, simply activate it for alarm if you pull out the plug whenever in dangerous emergency situations; Shut down the alarm when you insert the plug in;