Yes! If turned OFF/ON, the headlamp remembers your last used mode and brightness setting. For the Headlamp 325 and Headlamp 425, while the headlamp will remember your last used mode indefinitely, the headlamp will remember your last used brightness setting for 12 hours before resetting to default brightness.
**The HeadLamp 800 Pro will reset to default brightness after 90 seconds to avoid overheating should it accidentally turn on while packed away.