Saitek Calculator Chess is a calculator with an electronic chess computer hidden inside Full video: https://youtu.be/kHZHOptIFVk | By Daily Rad | Facebook
A calculator that has a build in chess board : r/INEEEEDIT
Saitek Electronic 4 in 1 Games Vintage 1999 Chess Checkers Line of 4 Top Mind | eBay
Saitek Model 118B Calculator Chess (1992) Electronic Travel Chess Computer