By default, the W-800H lacks a countdown timer (CDT). However, the internal PCB uses the same chip as other models that do have this feature.
Do not go into a Casio W-800H mod blind. Here is the hard truth from the modding community: casio w-800h mod
Halfway down the block, he stopped under a streetlight. The metal case had already picked up a tiny scratch near the 8 o’clock lug. He ran his thumb over it. The scratch didn’t bother him. That was the point of the mod, wasn’t it? Not perfection. Resilience. Taking something ordinary and making it yours. By default, the W-800H lacks a countdown timer (CDT)
Here is a creative feature idea for a :