900,000 volts! Mini size, L= 2-1/4" x H= 3-1/2" x W= 1", just the right size for your pocket or purse.  Features on-off safety switch, belt clip, and easy detachable wrist strap for joggers.  Requires one common 9-volt alkaline or rechargeable batteries.  Low battery drain (compared to others).  Safe, effective and non-lethal self-defense.