The rechargeable(NiMH battery technology) Streetwise stun baton is a self defense device which disrupts the message the brain sends to the voluntary muscles. Simply touching an attacker with a stun baton for three to five seconds will deliver a high voltage shock causing loss of balance and muscle control, confusion, and disorientation bringing him to his knees and making him incapable of further aggressive activity. Full recovery takes about five to ten minutes and there is no permanent harm. Measures 18 inches long and just 2 inches wide at the widest point and tapers down to 1 and one-quarter inches. Just test firing this unit into the air is often enough to stop an attacker. As the bright electric current pulsates between the test prongs and creates an intimidating electrical sound an attacker with any sense at all will be stopped in his tracks. If the sight and sound doesnt stop them a jolt from this unit certainly will! Holster Included: includes a heavy duty holster with belt loop for easy carrying. Life time warranty: Streetwise Stun batons are of the highest quality and come with a lifetime warranty. If you like this baton in standard format (ie. takes batteries) please see item SWB800.