Mousepad With integrated Calculator

My dad just redeem the mousepad giff from gintell. There are three options to choose from, a mousepad, mini clock with torchlight or manicure. My dad don't need any of it, so he gave me to choose it. This is what i got;

It has a sponge for my hand to rest on. It integrate a mini calculator, which i don't know if it would be usefull for me. Using it now, not sure if it's durable.

*Wishing Happy Father's Day to every father in the world.