At over 8 inches long and with a nasty pop when test fired, the Streetwise 1000K volt stun gun is sure to scare off would-be attackers. Besides its sheer power it also has great features, such as a built-in personal alarm. This alarm is 130 dB and can be used at the first sign of trouble to scare off a potential attacker and summon help. If the sound of the alarm is not enough to deter him then test firing this unit into the air is often enough to do it. As the bright electric current pulsates between the test prongs it creates an intimidating electrical sound. An attacker with any sense at all will be stopped in his tracks. If the sight and sound doesn't stop them then a jolt from this 1000K volt unit certainly will! Another great feature is the disable pin. The disable pin prevents an attacker from taking the unit away from you and then using it against you. A strap worn around your wrist attaches to a disable pin on the bottom of the unit. If the stun gun is pulled out of your hand the disable pin will pull out, preventing the unit from working. To prevent accidental discharge, three levels of safety have been built in. The disable pin must be inserted, the safety switch must be in the "on" position, and the trigger pressed down before the gun will operate. Includes a heavy duty holster with belt loop for easy carrying. Requires three 9-volt batteries (batteries not included). Dimensions are 8.25 inches x 2 inches x 1 inch. All Streetwise Stun Guns are covered by a lifetime limited warranty.