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About Söner Tank Watches
The tank shape has always worn well on a smaller wrist, so if you're after a women's fit, see our tank watches for women. New to the style? Our guide to what a tank watch is covers the history and the proportions.
The tank tradition produced some of the most recognised watches ever made, and we're often asked how Söner compares - read our take on the Nostalgia versus the Cartier Tank, our best Cartier alternatives, and the tank versus Reverso versus DolceVita comparison.
Söner is the world's only brand dedicated exclusively to rectangular analog watches - the tank is the watch we were built to make.
"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.
The Söner Tank Royal Steel is a 24 x 34 mm rectangular quartz watch in polished 800HV hardened stainless steel, with a white dial, Roman numerals, a hidden crown, a Swiss ETA 901.001 movement and an 11-year battery.
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 WatchesTank Watch FAQ
Common questions about tank watches and the Söner range
A tank watch is a rectangular wristwatch with a vertical case and flat, bar-like sides called brancards. Inspired by the design language that has made the shape one of the most enduring forms in watchmaking, it's the architectural style Söner is built entirely around.
For most wrists, a tank watch between 28mm and 35mm wide offers the best balance of elegance and presence. Söner's range covers both — the Nostalgia and Amorous at 40×28mm for a slimmer, classic fit, and the Legacy and Momentum at 45×35mm for a larger wrist.
Quartz is thinner, more practical, and lower-maintenance; automatic is mechanical and self-winding for those who want a traditional movement. Söner offers both: quartz in the Nostalgia and Legacy, automatic in the Amorous and Momentum.
Yes. Every model is built for daily use with hardened surgical steel, sapphire crystal with anti-reflective coating, and water resistance up to 10 ATM on the Momentum - backed by a 10-year warranty.
Söner is a strong Cartier Tank alternative for buyers who want the same rectangular design language in a more accessible watch - slim proportions, sapphire crystal, hardened steel, and a 10-year warranty, from $385, without the Cartier price.
