One of the best early chess computers endorsed by Kasparov himself. This is the type Pocket Chess from 1986, produced by SciSys from Hong Kong with Swiss Led precision. The computer itself measures only 10 cm x 5 cm or 4 x 2 inches so will fit in your pocket. Full working condition in original box with all the paperwork. Played a test game (lost again) and it works fine, uses 3 AAA batteries (not included). It is in very good condition with minimal signs of use. Nice mini pieces (complete). The box measures ca 20 x 13 cm or 8 x 5 inches. See the attached video on Kasparov in 1988.