Thanks to all, and sorry guys didnt noticed replies.
It's not a mock i'm trying to acquire some plutonium :D!
BTW Yes it's a countdown bomb, with diffent game modes, it's used in airsoft or similar "sports"
Would you be able to share any details on how you made this? Looking to build something like this for my airsoft club.
What detail you need? About code i'm not willing to share, but i can help if you have some coding issue or tips, i'm not that experienced coder tough.