Are you a retro computer geek (with big wrists)? Perhaps the Click Keypad Watch available from Watchismo is for you. Based on a numeric keypad, blinking lights on the number keys are capable of indicating both the time and date.
It’s 40mm x 46mm x 10.5mm (1.6′ x 1.8″ x .4″) so not the most discrete watch around. Strangely enough it’s not a wrist based calculator as well.
Available in black, grey, ivory and blue from Watchismo for $89.99