This DOUBLE TROUBLE is like having two stun guns in one. TWICE the contact -- totaling 1.2 million volts -- TWICE the stopping power! More effective than most stun guns because of the space between the contacts. The greater the space, the greater the effect. Most stun guns only have 1.5 inches. Double Trouble has 5 inches between contacts. Rubber Coated Soft Contour Grip to make it easy to hold and hang on to. Safety switch is on the top with a red LED on/off indicator to let you know if the stun gun is ready to fire. Uses 3 CR123A batteries (included). Also comes with a hand strap and FREE Nylon Carrying Case with Belt Clip ($15.00 alue). Only 6 inches long. Weighs 6.9 oz. 4.3 milliamps depending on the freshness of the batteries.