Clarity That Lasts.
Crafted with sapphire crystal for exceptional scratch resistance and lasting clarity. Designed to withstand everyday wear while preserving the pristine appearance of your timepiece.
Experience the refined elegance of the iconic Tank-inspired Santos design in a compact and dress-oriented 31mm format. Crafted with premium materials, clean geometry, and timeless proportions, this custom mod delivers understated luxury and everyday sophistication. Whether you prefer a classic Roman dial or the distinguished look of Arabic numerals, this model offers a refined presence suited for any occasion.
✨ Key Features
Premium 904L Stainless Steel Case & Bracelet
Featuring polished bevels, brushed surfaces, and an integrated bracelet design that delivers a luxury-inspired aesthetic with exceptional wrist comfort.
Japanese VJ24 Quartz Movement
Powered by the reliable Japanese VJ24 quartz movement commonly used in Seiko watches, offering precise timekeeping, low maintenance, and dependable everyday performance.
Sapphire Crystal
Scratch-resistant sapphire crystal ensures long-term durability and crystal-clear visibility.
31mm Elegant Tank Case Size
A compact and sophisticated case size designed for balanced proportions and comfortable daily wear while preserving the iconic Tank-style Santos silhouette.
📏 Specifications
Case Size: 31 mm
Thickness: ~8–9 mm
Lug Width: Integrated
Case Material: 904L Stainless Steel
Bracelet: 904L Integrated Santos-Style Bracelet
Crystal: Sapphire
Movement: Japanese VJ24 Quartz Movement
Water Resistance: 5–7 ATM
⌚ Dial & Functionality
Classic Roman Dial (With Date)
A timeless design featuring elegant Roman numerals paired with a practical date window at 3 o’clock.
Roman Dial (No Date Option)
Perfect symmetry for those who appreciate a cleaner, uninterrupted aesthetic.
Arabic Dial (With Date)
Traditional Eastern Arabic numerals combined with a date display for a distinguished and unique visual identity.
🌟 Why Choose This Santos Tank Mod?
The 31mm Santos Tank Mod combines timeless luxury-inspired styling with the precision and reliability of a Japanese VJ24 quartz movement. Its slim profile and elegant proportions make it ideal for both formal wear and everyday use. Whether you choose the classic Roman dial or the distinctive Arabic configuration, this model delivers a sophisticated and versatile wrist presence with effortless practicality.
Experience the refined elegance of the iconic Tank-inspired Santos design in a compact and dress-oriented 31mm format. Crafted with premium materials, clean geometry, and timeless proportions, this custom mod delivers understated luxury and everyday sophistication. Whether you prefer a classic Roman dial or the distinguished look of Arabic numerals, this model offers a refined presence suited for any occasion.
✨ Key Features
Premium 904L Stainless Steel Case & Bracelet
Featuring polished bevels, brushed surfaces, and an integrated bracelet design that delivers a luxury-inspired aesthetic with exceptional wrist comfort.
Japanese VJ24 Quartz Movement
Powered by the reliable Japanese VJ24 quartz movement commonly used in Seiko watches, offering precise timekeeping, low maintenance, and dependable everyday performance.
Sapphire Crystal
Scratch-resistant sapphire crystal ensures long-term durability and crystal-clear visibility.
31mm Elegant Tank Case Size
A compact and sophisticated case size designed for balanced proportions and comfortable daily wear while preserving the iconic Tank-style Santos silhouette.
📏 Specifications
Case Size: 31 mm
Thickness: ~8–9 mm
Lug Width: Integrated
Case Material: 904L Stainless Steel
Bracelet: 904L Integrated Santos-Style Bracelet
Crystal: Sapphire
Movement: Japanese VJ24 Quartz Movement
Water Resistance: 5–7 ATM
⌚ Dial & Functionality
Classic Roman Dial (With Date)
A timeless design featuring elegant Roman numerals paired with a practical date window at 3 o’clock.
Roman Dial (No Date Option)
Perfect symmetry for those who appreciate a cleaner, uninterrupted aesthetic.
Arabic Dial (With Date)
Traditional Eastern Arabic numerals combined with a date display for a distinguished and unique visual identity.
🌟 Why Choose This Santos Tank Mod?
The 31mm Santos Tank Mod combines timeless luxury-inspired styling with the precision and reliability of a Japanese VJ24 quartz movement. Its slim profile and elegant proportions make it ideal for both formal wear and everyday use. Whether you choose the classic Roman dial or the distinctive Arabic configuration, this model delivers a sophisticated and versatile wrist presence with effortless practicality.
We carefully prepare every custom timepiece before shipping. Delivery estimates are displayed on the product page or at checkout.
An automatic watch is powered by a mechanical movement that winds itself through the natural motion of your wrist. It does not require a battery to operate.
When not worn, an automatic watch may eventually stop and require winding and time adjustment before use. Some ModSphere watches use quartz movements instead; refer to the product's movement specifications.

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Explore the details behind your timepiece.
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MADE TO STAND OUT.