Two of the most popular ways into watch modding are Casio and Seiko, and beginners often ask which to start with. They suit different goals, budgets, and skill levels. Here's a straight comparison to help you choose.
The quick answer
Start with a Casio mod if you want something cheap, fast, and low-risk that still looks great. Move to a Seiko mod when you want a mechanical watch, deeper part swaps, and a more "watchmaking" experience. Many modders do Casio first, then Seiko.
Casio modding: cheap, easy, fast
Casio digital and budget watches — the F-91W, A168, AE-1200 Royale, and the Duro — are inexpensive and forgiving. Many mods are strap, colour, faceplate, and crystal changes that need few tools. You can build a great-looking Casio for $20–100 and learn the basics without much risk.
Seiko modding: deeper, pricier, mechanical
A Seiko mod (SKX, Seiko 5, Turtle, Samurai) means working with a mechanical movement and swapping dials, hands, bezels, chapter rings, and crystals. The results can be stunning, but parts cost more and the work is more involved. See the best Seiko watches to mod for the platforms.
Cost comparison
- Casio: ~$20–100 all-in for a complete build.
- Seiko: ~$150–400+ once you add a quality dial, sapphire crystal, and bezel.
Which should you start with?
If it's your first mod, start with Casio: lower cost, fewer tools, and quick wins build confidence. When you're comfortable and want a mechanical project, step up to Seiko. New to all of this? Read what is a mod watch and the beginner tool kit first.
Try Casio in 3D today
You can preview Casio mods for free right now in the 3D modding labs. See the FAQ on supported brands for what's coming.
