Heko LED watch

I love the creativity of Tokyoflash!
This watch face is a simulation of Heko LED.
The four red lights in the upper area show the hours: 12, 3, 6 and 9 ordered like on analog clocks with the twelve on top, three on the right side, etc.
The two green lights in the upper area show the hours between the red light hours.
Example: the left red light is on and the two green lights are on means 9 + 1 + 1 which is 11 o'clock.
The four red lights on the bottom represent the minutes: 0, 15, 30 and 45. You read them just like the hours described above.
The two green lights show the 5 minutes between the red lighted minutes.
Example: the bottom red light and one green light is on means 30 + 5 which is 35 minutes of the hour.
Two know the exact minute, you have to read status of the four orange lights in the middle. If you see 2 lights you have to add 2 minutes to the result of the red and green lights.
Example: the left bottom red light, two green lights and three orange lights are on means 45 + 5 + 5 + 3 which is 58 minutes of the hour.
Here's the manual of the original watch and its webpage:
http://www.tokyoflash.com/pages/000218/000218.pdf
http://www.tokyoflash.com/de/watch_museum/tokyoflash/heko/