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 multi function has a disable pin, wrist strap, super bright led flashlight, red flashing emergency lights and a 110 db pesonal alarm all built in for added protection. They use two 9- volt Energizer Eveready Alkaline batteries. Stun Master stun guns have a one year Warranty.