Moddys Watches - Custom Timepieces At Seiko Moddys, we seamlessly blend the timeless elegance of luxury watches with the renowned precision and reliability of Seiko movements. Specializing in custom-mod watches, we proudly incorporate high-quality movements into our creations, paying homage to iconic luxury models like the Seiko Submariner, Seiko Nautilus, Seiko Aquanaut, Seiko GMT, Seiko Marinemaster, Seiko Datejust, Seiko Oyster, Seiko Black Bay, Seiko Panerai, Grand Seiko Mod, Seiko Speedmaster, Seiko Seamaster and more. Our commitment to craftsmanship is evident in our use of premium materials such as scratch-resistant sapphire crystal and durable 904L stainless steel, ensuring that each timepiece is not only visually stunning but also built to last.