Detailed Product Description SH7900 Aluminium flashlight with Digital Ring-Switch on head & Tactical On/Off Switch on end cap Digital 360° Ring- ... SwitchDigital Ring-Switch 12 modes control ring switch, 6 permanent bright modes, 3 SOS modes, ... 3 flash signal modes, 360° ring-switch design, extremely smoothly to operate. Power switch is located at tail cap, press for ...