This personal alarm key chain is small and portable , compact and lightweight design makes it easy to portable Just pull the contact pin out or press the SOS button two times quickly, the personal alarm will work Our personal safety alarm is designed with night lighting and waterproof function, very practical The personal security alarms is easy to use, no requires training or skill to operate The personal alarm keychain can make a loud sound to draw attention to protect you from having an emergency, Weight: 0.14991433816 Pounds, Manufacturer: Bemonew_E79_1064802