A-11PreparationASettings and operationsQuestion Key phrase 0What kind of batteries do I use in the Speedlight? Compatible batteries B-17How long is the recycling time and how manyflashes are possible with each fresh set ofbatteries?Minimum number offlashes/recycling time foreach battery typeH-23How can I change the function settings? Menu settings B-24How can I reset various settings? Two-button reset B-13How can I lock the dial and buttons of theSpeedlight to prevent accidental use? Key lock B-10How can I adjust the standby activation leadtime? Menu settings B-24How can I confirm the version of firmware? Menu settings B-24How can I update the Speedlight firmware? Firmware update H-11