It's been a while since there was a Sonic wall clock.
However, in 2021 the company "Accutime" releases a 9 inch standard round wall clock with modern Sonic theme. It has a blue border & blue numbers. It comes in this branded (has logo on the outside) cardboard box. The image for the clock face is jumping forward CG Sonic with that 'jagged ring' that sometimes appears on schoolbags for the background.
The placement for the white clock hands isn't ideal, it's right in his eye. The white hands also aren't the best because as they go over Sonic's hands they'll be harder to see. The plain numbers and lack of branding on the clock itself lead it to looking a tad suspicious, but this is a licensed item available at Target in 2021. It should be about 25 dollars, so it likely is not flimsy.