Stun Master stun guns have withstood the test of time. A leader in the self defense products industry since 1994 stun master stun guns are a great value and a powerful personal protection tool. Don't be fooled by the low price of stun master stun guns these are quality self defense products, that are very capable of providing personal protection. The Stun Master stun guns on this page have safety switches and wrist straps. They use two 9- volt Energizer Eveready Alkaline batteries(except for the 100,000 volt which uses one). Stun Master stun guns have a one year Warranty.