The Stun Master Hotshot is only 3 inches long and looks like a cell phone or other handheld device. No one will even notice you have close to 5 million volts of self protection in your hand. This stun master hotshot is a mini stun gun that works like a large stun gun. This little stun master hotshot pacts an amazing 4.5 million volts and has the effect of being hit by a baseball bat combined with the element of surprise. This specifically designed stun gun is equipped with a safety on/off switch and an illuminated red light will come on that tells you that it is ready to use. This stun gun uses three lithium CR 123A batteries, included (a$10 value) and comes with a free nylon holster with belt loop. Dimensions are 2.1/4" x 2" x 1.1/8. Comes with a lifetime warranty.