This Double Trouble Stun Gun packs a 1.2 million volt punch! These guns are excellent quality and perfect for self defense (or just for showing off- what a great conversation starter). A small trigger beneath the pointer finger allows you to activate the stun feature. The Double Trouble Stun Guns are made by a company called ZAP who has been one of the top manufactures of Stun Guns for years. The Double Trouble Stun Guns are covered in a soft rubber coating and the contour grip assures full control. The knuckles include 2 lithium batteries and a carrying case/holster.