A personal defense device includes an electrical stun circuit and electrodes with a structure adapted for use as an impact weapon as well, and further includes a radially disposed flashlight or signal light therewith. The electrical circuitry for the stun apparatus is formed of flexible circuit material with dual circuit paths between each component, for reliability and resistance to damage due to impact forces incurred when the device is used as an impact weapon. A second, normally closed interrupter switch is provided for the stun circuit, with the user of the present device being required to hold the interrupter switch in order to keep the stun circuitry from operating when the master switch is turned on. The end opposite the handle includes a series of impact ribs with cutting blades removably installable thereon, to produce shallow (non-life threatening) cuts in an assailant during an attack.