If you want to take your W-800H to the next level, here is the general process for a case swap.

Tools Needed:

Step 1: Open the Donor Watch Turn the W-800H over. You will see four small screws holding the stainless steel case back. Unscrew them carefully. The back will pop off.

Step 2: Remove the Module Inside, you will see the watch module and the battery. Gently lift the module out. Be careful not to touch the coil or delicate internal parts; hold it by the edges. Disconnect the tiny spring contacts for the speaker/sounder if necessary (some kits require you to transfer the sounder from the plastic case to the new metal case).

Step 3: Prepare the New Case Your new metal case will likely come with a new gasket and crystal already installed. Ensure the cavity is clean.

Step 4: Transplant Place the W-800H module into the new metal case. Ensure the alignment is correct so the buttons line up with the contacts on the module. This is the most frustrating step; you may need to use tweezers to adjust the module's position so the buttons click satisfyingly.

Step 5: Close It Up If the metal case uses a screw-down back (most quality ones do), place

The Casio W-800H is a classic digital watch known for its 100m water resistance, 10-year battery, and large, legible display. A "mod" (modification) typically refers to customizing the watch for new aesthetics or functions.

Here is a creative feature idea for a Casio W-800H mod:

In the world of watch modding, the Casio W-800H is an unlikely hero. For around $20 USD, you get a 100-meter water-resistant, 10-year battery digital watch. But for a growing community of modders, that’s just the starting point.

The W-800H mod scene exists because the watch solves a simple equation: cheap + tough + huge display = perfect canvas.

Here are the three most popular ways people are modifying the Casio W-800H.

Let’s combine the above knowledge into a specific build. This is the most recommended mod for first-timers who want a serious looking watch.

Goal: Convert a stock DW-800H (or W-800H-1AV) into a Black & White "Stealth Explorer."

Parts Needed:

Step 1: Module Extraction 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.

Step 2: Stem Trimming (Crucial for Steel Cases) The stock plastic case uses plastic pushers. The steel case uses metal pushers with screws. You must trim the two pusher stems on the module (Light and Mode/Start) to fit the deeper metal case. Use flush cutters. Measure twice, cut once.

Step 3: Case Assembly Place the module into the new steel case. Ensure the zebra strips (conductive rubber) align with the LCD screen. Insert the metal pushers. Screw in the case back. It should be tight.

Step 4: Applying the Bezel Insert Clean the steel bezel. Use a thin ring of double-sided tape (3M) or B-7000 glue. Press the new 24-hour insert evenly. Align "24" with the 12 o'clock position.

Step 5: The Finish Thread the NATO strap through the steel lugs. Press the buttons to set the main time to your local zone, and the Dual Time to UTC. Rotate the bezel so the 24-hour mark aligns with UTC.

The Result: You now have a fully analog-digital hybrid. It is scratch-proof (sapphire), waterproof (screw-down case), and tracks three time zones. No one will believe it started as a $17 Walmart special.

W-800h Mod: Casio

If you want to take your W-800H to the next level, here is the general process for a case swap.

Tools Needed:

Step 1: Open the Donor Watch Turn the W-800H over. You will see four small screws holding the stainless steel case back. Unscrew them carefully. The back will pop off.

Step 2: Remove the Module Inside, you will see the watch module and the battery. Gently lift the module out. Be careful not to touch the coil or delicate internal parts; hold it by the edges. Disconnect the tiny spring contacts for the speaker/sounder if necessary (some kits require you to transfer the sounder from the plastic case to the new metal case).

Step 3: Prepare the New Case Your new metal case will likely come with a new gasket and crystal already installed. Ensure the cavity is clean.

Step 4: Transplant Place the W-800H module into the new metal case. Ensure the alignment is correct so the buttons line up with the contacts on the module. This is the most frustrating step; you may need to use tweezers to adjust the module's position so the buttons click satisfyingly. casio w-800h mod

Step 5: Close It Up If the metal case uses a screw-down back (most quality ones do), place

The Casio W-800H is a classic digital watch known for its 100m water resistance, 10-year battery, and large, legible display. A "mod" (modification) typically refers to customizing the watch for new aesthetics or functions.

Here is a creative feature idea for a Casio W-800H mod:

In the world of watch modding, the Casio W-800H is an unlikely hero. For around $20 USD, you get a 100-meter water-resistant, 10-year battery digital watch. But for a growing community of modders, that’s just the starting point.

The W-800H mod scene exists because the watch solves a simple equation: cheap + tough + huge display = perfect canvas. If you want to take your W-800H to

Here are the three most popular ways people are modifying the Casio W-800H.

Let’s combine the above knowledge into a specific build. This is the most recommended mod for first-timers who want a serious looking watch.

Goal: Convert a stock DW-800H (or W-800H-1AV) into a Black & White "Stealth Explorer."

Parts Needed:

Step 1: Module Extraction 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. Step 1: Open the Donor Watch Turn the W-800H over

Step 2: Stem Trimming (Crucial for Steel Cases) The stock plastic case uses plastic pushers. The steel case uses metal pushers with screws. You must trim the two pusher stems on the module (Light and Mode/Start) to fit the deeper metal case. Use flush cutters. Measure twice, cut once.

Step 3: Case Assembly Place the module into the new steel case. Ensure the zebra strips (conductive rubber) align with the LCD screen. Insert the metal pushers. Screw in the case back. It should be tight.

Step 4: Applying the Bezel Insert Clean the steel bezel. Use a thin ring of double-sided tape (3M) or B-7000 glue. Press the new 24-hour insert evenly. Align "24" with the 12 o'clock position.

Step 5: The Finish Thread the NATO strap through the steel lugs. Press the buttons to set the main time to your local zone, and the Dual Time to UTC. Rotate the bezel so the 24-hour mark aligns with UTC.

The Result: You now have a fully analog-digital hybrid. It is scratch-proof (sapphire), waterproof (screw-down case), and tracks three time zones. No one will believe it started as a $17 Walmart special.