Casio Data Bank when I wear a watch.
Waterproof to 30 feet at least I think it is. The last one was.
•150 Page Databank.
•8 letters and 12 numerals per page.
•Memory shared between telememo and schedule memo.
•EEPROM memory protection.
•Constants for addition, subtraction, multiplication and division.
•EL Backlight with Afterglow.
•24 time zones (23 cities), city code display, daylight saving on/off.
•Measuring unit: 1 second Countdown range: 1 minute to 24 hours Auto-repeat Function.
•1/100 second stopwatch.
•Measuring capacity: 23:59’59.99” Measuring modes: Elapsed time, split time, 1st-2nd place times.
•Hourly Time Signal.
•Auto Calendar (pre-programmed until the year 2094).
•12/24 Hour Formats.
Now I can really impress a girl in a bar when I explain all it can do.
Oh yeah around $30. Bought two just in case one goes plop.