For those not willing to tear apart the watch case, the strap swap is the easiest entry point.
Difficulty: 8/10 | Cost: $3 (Film) Casio sells negative display versions, but they are often hard to read. However, doing a DIY polarizer flip is a right of passage. casio w-800h mod
Difficulty: 4/10 (Drop-in) | Cost: $80 - $120 This is the most advanced and rewarding mod. Several aftermarket companies (most notably SKXMOD and occasional eBay sellers) produce full metal cases and bezels specifically for the W-800H module. For those not willing to tear apart the
The stock positive LCD is clean, but many prefer a tactical look. Modders either: Most mods start with the case
Difficulty: 3/10 | Cost: $15 If you have the steel case mod (or even on the stock plastic case with an adhesive ring), you can swap the bezel insert.
Most mods start with the case. Because the W-800H has a screw-down case back (unlike the F-91W’s friction fit) and 100M water resistance, you can actually take a modded watch swimming. The CR2025 battery lasts a decade, meaning you aren't opening the case every year.
Difficulty: 1/10 | Cost: $10 - $30 The stock resin strap of the W-800H is stiff and dust-magnetic. Fortunately, the lug width is 18mm (though the gap is tight).