Specifications:Requires no training or skill to operate, and can be used by anyone regardless of age or physical ability.The perfect defense mechanism to prevent kidnappings and abductions of young children and teenagers.120dB ear-piercing panic alarm that startles and scares away attackers.Proved to be more effective than mousse or pepper spray as a defense tool.Also commonly used by seniors as an alert device to call for help in case of falling.Simply pull the pin, and this ear-piercing alarm will activate for up to a half hour of continuous sound.Plug the pin back in to stop the alarm, can be used over and over again.Easily attached to keys, purses, backpacks or belts.Type: Personal Alarm Key ChainLoudness: 120dBMaterial: ABS + MetalColor: Sent at RandomSize: 6.2cm x 4.2cm/2.44" x 1.65" (Approx.)Notes:Due to the light and screen setting difference, the item's color may be slightly different from the pictures.Please allow slight dimension difference due to different manual measurement.Package Includes:1 x Personal Alarm Key Chain1 x 12V/23A Battery