Although the Abacus Keychain is a fully functional abacus, we don't recommend using it to balance your checkbook.

First of all, we don't even know how to use an abacus. However, we have learned that in 1946, a Russian abacus schooled an electronic calculator in terms of speed of calculation.

So, it is quite possible that you could become quite proficient with your Abacus Keychain and impress your friends with your powerful arithmetic skills.