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How to spot a fake watch
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The SÖNER Tank Royal Steel is a classic tank watch: a 24 x 34 mm rectangular case in polished 800HV hardened stainless steel, 6 mm thick, with a porcelain white dial, Roman numerals, a hidden crown, a Swiss ETA 901.001 quartz movement with an 11-year battery, sapphire crystal and 5 ATM water resistance, backed by a 10-year warranty.
"It’s not a copy of the past. It’s an evolution of the form."
/Freddie
The official launch is scheduled for November and December 2026. Delivery timing makes it an ideal piece for a Christmas present, whether for yourself or a loved one.
This is the beginning of a new chapter for SÖNER, the creation of our first ever classic Tank watch, the SÖNER Tank Royal Steel. A watch born from proportion, angles, and precision.
SÖNER Tank Royal Steel unites 1920s Art Deco elegance, the clean lines of modern Swedish design, and the precision of Swiss heritage. Polished steel is the honest reading of this design: nothing added, nothing disguised, the geometry left to speak for itself.
Look closely and you begin to see the details. The baton hands are broad, solid and sharply defined, resembling the silhouette of tank cannons. At exactly 12 o'clock, their alignment creates an especially striking impression: one black barrel pointing toward the top of the dial, set hard against the polished steel.
Even the numerals carry a unique choice. Almost every watch with Roman numerals, from Cartier to Patek Philippe, Rolex, Longines and most of the other top-tier houses, uses IIII at the 4 o'clock position rather than the grammatically correct IV, a convention chosen for visual balance against the VIII opposite it on the dial. The SÖNER Tank Royal Steel breaks from that convention and uses the true numeral, IV. It is one of the few watches on the market where the four reads exactly as Roman numerals should.
Then there is the case.
Its distinctive construction takes inspiration from the caterpillar tracks of a tank. The brancards, the vertical parallel case flanks, are deliberately rounded on the top and flat at the bottom, creating a visual profile reminiscent of the individual sections of a tank track. This gives the Tank Royal Steel a more mechanical, robust presence and strengthens the resemblance to the real engineering of an armoured vehicle.
At the heart of the design is a detail you almost don't notice at first: the hidden crown.
By concealing the crown within the case architecture, the SÖNER Tank Royal Steel preserves an unusually clean and symmetrical silhouette. Nothing interrupts the armour-like geometry. From the front, the case becomes a single, disciplined form, much like the uninterrupted surfaces of an armoured vehicle.
And finally, the gun turret.
The raised upper structures draw inspiration from the gun turret of a tank. They frame the watch from above, giving the case its distinctive vertical architecture and completing the connection between the watch and the machine that inspired it.
The SÖNER Tank Royal Steel draws its character from elegance, engineering and Art Deco.
SÖNER Tank Royal.
Wear the difference.
Rectangular watches are not a variation of round design. They are a different design philosophy.
This guide explores the history, geometry, engineering complexity, movement considerations, sizing logic, price tiers, and cultural significance of rectangular watchmaking - structured as a permanent educational resource rather than a buying article.
Explore the full framework and master the category.
Guide to Rectangular Watches
Choose a white dial on leather with quartz. Confirm 20 mm or 22 mm strap width in the Size Guide, check sleeve glide with the slim rectangular case, and add a second quick-release leather strap for rotation.
Select a white dial on leather with automatic. Verify the model’s rating, confirm strap width, and add a spare quick-release strap to shift from office to weekend.
Pick a black dial on a 316L steel bracelet with quartz for easy upkeep. Confirm 20 mm or 22 mm strap width, review lug-to-lug fit for comfort, and add a quick-release leather strap for range.
Choose a black dial on bracelet with automatic for measured presence. Confirm strap width, verify cuff clearance, and use quick-release pins to switch to leather when the setting calls for polish.
Tired of Round Watches? Discover our Rectangular Watches
If traditional round watches feel overdone or uninspired, a rectangular watch offers a refreshing alternative. Our collection blends timeless Art Deco style with modern craftsmanship to create pieces that stand out—both in looks and functionality.
Unlike round watches that dominate the market, rectangular watches frame your wrist with clean lines, bold geometry, and a distinct elegance. The shape flatters a wide range of wrist sizes and offers a more refined, architectural look that feels deliberate—never generic.
Whether you're into classic black and white or want a splash of green, blue, or red, our dials offer color choices that reflect your personality. From minimalism to bold expression, there's a model that feels made for you.
Choose from precise quartz movements or intricate automatic calibers. Many models feature water resistance up to 5 ATM, giving you peace of mind whether you're at an event or out in the rain.
Rectangular watches naturally suit all genders. Their balanced proportions work well with smaller wrists and larger ones alike. We've designed our collection to appeal to women, men, and anyone who appreciates timeless design.
