At 975,000 volts, 3 inches long, appears like a handheld mobile device like a Blackberry , this little stun gun is equipped with a safety switch and an illuminated red light indicating the device is armed. Uses 3 Lithium CR123A batteries (included FREE), a $10.00 value. Comes with FREE detachable stainless steel belt clip, Lifetime Warranty, Safety on/off switch.