This ZAP Double Trouble Stun Gun has two (2) contact points and produces an astounding dual 600,000-volt charge that is bound to bring down any attacker in half a second. Its contoured rubber grip makes it easy to carry and hold while walking or jogging. The safety switch on this unit is located at the top of the device and can be easily reached with your thumb, making it highly accessible and easy to activate. To prevent accidental shock, the unit has a red LED warning light to signal to you that the charge is switched on. The product package includes two (2) 3V lithium batteries and a nylon carrying case. This unit measures 6″ long and weighs 7 oz.