Four digits for hours and minutes
A four-digit display is the compact option when you mainly need hours and minutes. It leaves more room for a keyboard, speakers, and charging space, making it easier to place on a small desk or bedside table.
Five tubes for a more sculptural object
Five individual clear display modules give the clock a stronger object-like presence. Look beyond the tube count and confirm what each module displays, how the animation behaves, and whether the proportions suit the viewing distance.
Six digits for hours, minutes, and seconds
Six digits show the full time at once and usually require more width. They work well below a monitor or on a long shelf. For bedroom use, compare the lowest brightness setting before prioritizing a larger display.
Common question
Is a clock better just because it has more tubes?
No. More positions add information and visual presence, but also use more space. Choose by viewing distance, desk size, and whether seconds are genuinely useful.