Compact design & innovative technology. New electronic multi-mode end cap switch for 5 different operating modes: (1) Dimming feature: Maximum light output (100%) & dimmed by twisting the wrist. Memory feature for saving the preset dimming level with restart. (2) Stroboscope (STROBE) with flash: Changeable frequency (Max to Min) by twisting the wrist. (3) Signal: Flash mode for Morse code. (4) SOS: Emergency signal. (5) Nite Lite: Night Light with snooze function, reactivation with motion + locking feature (prevents accidental switching).