A regular stun gun with up to 1,000,000 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. Uses 1 or 2 - 9v batteries.