What are the three circles of the Royal Oak?

24-hour clock, stopwatch timing, minute timing. According to the website of Watch House, the three circles of Royal Oak are: the small disk at 3 o'clock stands for 24-hour system, the small disk at 6 o'clock stands for stopwatch timing, and the small disk at 9 o'clock stands for minute timing. Royal Oak is the world's first luxury sports watch.