Self-defense gadgets are devices that are designed to help individuals protect themselves from attackers. These gadgets can range from simple, handheld items like pepper spray or a personal alarm, to more complex devices like stun guns or Tasers. Some common self-defense gadgets include:

Pepper spray: Pepper spray is a self-defense tool that contains a chemical compound called capsaicin, which is derived from chili peppers. When sprayed in an attacker's face, it can cause temporary blindness, difficulty breathing, and a burning sensation on the skin.

Personal alarms: Personal alarms are small, portable devices that emit a loud, attention-getting sound when activated. They are designed to draw attention to the user and potentially deter an attacker.

Stun guns: Stun guns are handheld devices that deliver a high voltage electric shock to an attacker. They are designed to incapacitate an attacker temporarily, allowing the user to escape.

Tasers: Tasers are electroshock weapons that deliver a high voltage electric shock to an attacker via two small darts attached to wires. They are designed to incapacitate an attacker temporarily, allowing the user to escape.

It's important to note that self-defense gadgets are not a substitute for self-defense training. They can be a useful tool to have in certain situations, but it's also important to know how to defend oneself physically and to be aware of one's surroundings to avoid potentially dangerous situations.