Digital Count Up Timer

I am looking for a custom-made count up timer that meets the following criteria:
About the size as a credit card calculator (about 3.25" wide by 2" high by 1/8" thick) or maybe a square (about 2.5" wide and high by less than 1/4" thick).
Must have replaceable battery, not solar.
Count up to 999 days 23 hours 59 minutes.
Button to "Reset" back to all 0 and automatically start over - no pause, no stop, no start, just the Reset.
Must be able to tolerate temps as low as 0 degrees F and as high as 100F. Doesn't have to be waterproof, but water-resistant would be good.
Some text to be printed around the display and button. Provided when I find a Seller.