Always be ready to knockout or frighten a potential attacker with this brass knuckle taser. Every punch blows a powerful 950,000 volts of electricity at the time of impact, which is enough to paralyze your assailant. It is very lightweight and easily concealable. It requires two lithium batteries to work and has an easily accessible safety switch at the thumb. This would become your best friend on potentially unsafe travel destinations. It is a very effective weapon to stop the muggers and making them run away. This is best self-defense weapon when you go for a run. They are the Real-life Galvaknuckles!