A revolutionary calculator no bigger than a credit card , the eight-digit SL-800 paved the way for much more to come. Casio revives this iconic design in timepiece form, bringing the original 80s touch to the ever-popular A168 by using the retro black and gold base colors of the SL-800, and even the same accent colors used for the time display numbers and other details. Vintage flair meets contemporary style for a timepiece as eye-catching as it is nostalgic.