Chadwick Pocket Siren Alarm, a personal safety device from the 1960s. Key features and information include:

Purpose: Designed for personal protection, easily fitting in a pocket or purse.

Operation: It emits a loud siren sound when activated, intended to deter potential threats.

Battery: Requires one "C" size battery.

Battery Installation: To insert the battery, remove the screw on the back using a dime or pen, insert the battery with the top towards the buzzer, and replace the back.

Era: This item is from the 1960s.