Design submitted by Logan from the USA.
This watch design is a black ribbon watch with either black or grey raised rubber lines running along its length and width. These raised rubber lines divide the watch’s surface into a grid of rectangles, the middle 6×5 of which have LEDs that are used to display the time.
The columns in this grid stand for 1-5, from left to right. The top three rows are used to show the hours, the fourth row shows the tens of minutes, and the bottom two rows show the single minutes. Just add the lit rectangles to read the time. For example, 11o’clock has 5 lit in the top row, 5 lit in the second row, and 1 lit in the third row (11=5+5+1). If there are 9 single minutes in the time, then 5 will be lit in the fifth row and 4 in the bottom row (9=5+4). Many times it never requires addition, like 3:55 (3 lit in the first row, 5 lit in the fourth row, and 5 lit in the fit row).
The grid of raised rubber lines on the watch face gives the watch a unique appearance, even then the LEDs are all off.