A regular stun gun with 400,000 volts to protect you from possible attackers. Plus, this stun gun comes with an added feature other stun guns do not have. It includes a 130db alarm that can be switched on or off with the switch on the side. The on/off has 3 levels; off, you can turn the stun gun on, and you can turn on the stun gun AND the alarm. There is also a safety backup. When the wrist band is pulled and unplugged , the stun gun is disabled so it can not be turned against you.