Mod: Casio W-800h

You get the rugged, go-anywhere reliability of a Casio digital brain, wrapped in a custom chassis that looks like a million bucks but costs less than a dinner for two. The process of modding—of risking the $20 watch to create a $200 look—teaches you more about watchmaking than just buying a Seiko.

Open the four screws on the W-800H case back. Remove the rubber gasket (protect it). Lift the plastic movement holder. Press the small metal nub near the battery to release the AC reset. Remove the module. casio w-800h mod

: The most sought-after hack. It requires opening the watch and removing a small solder jumper on the PCB. Once removed, the timer becomes a selectable mode. 5-Alarm Mod : Modifying jumpers can also unlock up to 5 independent alarms , whereas the stock version only utilizes a few. You get the rugged, go-anywhere reliability of a

: Remove the four screws on the backplate. Carefully lift the metal plate, ensuring you don't lose the tiny rubber gasket or the alarm spring. Remove the rubber gasket (protect it)

The package arrived on a Tuesday, wrapped in dented brown paper. Inside: one Casio W-800H, the digital classic with a ten-year battery and a face so straightforward it felt almost defiant. Also inside: a tiny ziplock bag of o-rings, a pair of curved tweezers, and a photocopied guide titled “The Poor Man’s G-Shock.”