self defence flashlight torch is use enclosed charger input to 220V power, and out-plug input to the stun gun, the indicator will be on. Be sure to fully charge the unit for 12 hours before the first use to maximize battery life. Push toggle switch up for the lighting, the toggle switch is pushed down to the bottom, pressing the electric switch, you can use electric shock. NOTE:keep away from children's reach,giving current shock of approximately 20v,self defence torch,best for girls,protect from eve teasing,best product for night shift working girls.