Gamma 600,000 volt unit. Two switches to prevent accidental discharges. Unit requires one nine volt battery for operation (not included). Measures 4" x 2.5" x 1" wide. Weighs 6.4 ounces without the batteries. Complete with lanyard strap and nylon case. Not legal in all areas and states, check local laws before buying or carrying. Available in 100,000 Volts (DBA-360), 200,000 Volts (DBA-365), 350,000 Volts (DBA-362), 600,000 Volts (DBA-361, and 800,000 Volts (DBA-363). Not legal to own, sell or ship to any resident in the District of Columbia, Illinois, Dennison, Iowa; Hawaii, Massachusetts, Michigan, New Jersey, New York, Philadelphia, PA; Portland, OR.; Rhode Island, St. Paul, MN.; Wisconsin, or Maryland. Compact Stun Guns Self Defense weapon uses a 9-Volt battery to deliver a stunning voltage surge, includes a nylon belt case; three outputs, same size and shape, Imported. Gamma Stun Gun 600,000 Volts.