Heeler Ti-1

The Ti-1 is a Grade 5 titanium case for the Casio F91W, the cheap digital watch everyone has owned, made by the small American Heeler Watch Company. Heeler machines the case and the laser-engraved caseback, fits a custom sapphire crystal printed in your choice of design, and installs the F91W's own module, buttons and strap, or sells it as a kit to assemble yourself. Because the module is stock, it keeps the F91W's dim backlight, and Heeler is candid that water resistance is about what the original offers: fine for splashes and rain, not for swimming or the shower. It is made in pre-order rounds with a wait of around twelve weeks, and the fully assembled version costs $155.

Written 28 September 2026 from Heeler's product page.