Rolex Watch

There are some visual advantages to having the hands in the 10:10 positions.
One is that the hands aren’t allowed to cross one other. The fact that they are on both sides of the watch face ensures that the hands are visible and appreciated.
The hands also look beautiful on the face of the clock because of the position. The 10:10 position is symmetrical, because the human brain prefers order and symmetry.

Another reason is that key details on the face of the watch or clock usually remain visible at 10:10. The logo of the manufacturer is usually found under the 12, and sometimes next to the 3-, 6-, and 9-o’-clock positions. Logos found under the 12 are nicely framed by 10:10 hands.
Finally, the 10:10 hands look “happy” due to the fact that the hands look like a smile (or like a “V” as in “victory”). The NYTimes reports that Timex used to use the time 8:20 in their product photos, but eventually decided to turn that “frown” upside-down.