World's smallest! ZAP Stun Guns! Each is a mere 3 1/2 x 2 1/8 x 7/8", 3 ozs.... but they'll floor any attacking creep with an immobilizing zap, in just a half-second. Extreme high-voltage powerful, using just 3 lithium batteries (included). Easy, safe to use, with on / off switch, safety button and LED "ready" indicator. Comfortable contour grip. Nylon holster.