It is best to use Arabic numerals for watch data, because people are used to using Arabic numerals in daily life and Roman numerals need to be converted, so Roman numerals should be used.

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Arabic numerals

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Arabic numerals are now commonly used in the world. It was first invented by Indians, then spread to Europe by Arabs, and then modernized by Europeans. Because the spread of Arabs has become the key node of such numbers, people call it "Arabic numerals" (it can also be said that people made a mistake and called it Arabic numerals by mistake).

Arabic numerals consist of 0, 1, 2, 3, 4, 5, 6, 7, 8, 9 * * * 10 counting symbols. Take the position value method, the high position is on the left, the low position is on the right, and the writing is from left to right. With the help of some simple mathematical symbols (decimal point, minus sign, percent sign, etc. ), this system can clearly represent all rational numbers. In order to express extremely large or extremely small numbers, people have created scientific notation on the basis of Arabic numerals.