The Double Trouble stun gun is 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. The Double Trouble has 5 inches between contacts. Features: • 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). • Hand strap and free Nylon Carrying Case with Belt Clip ($15.00 Value). • Length: Only 6" long. • Weighs just 6.9 oz.