There’s no need for numbers.
If your wall clock is just too noisy, too bulky and has too many numbers, then you better switch to the Kikkerland Swiss Station Ultra Flat Wall Clock. This clock is considered one of the thinnest in the world, measuring only 0-3/4 inch wide with red station style markers on a white face, which makes it unobtrusive yet easily noticeable. Additionally, you won’t be bothered by the ticking sound because it has a whisper quiet stepping movement. It comes with one lr1130 button cell battery.