Cartier Tank Solo Watches

Launched in 2004, the Tank Solo was designed as the modern entry point into Cartier’s Tank collection. Its rectangular case with flat brancards, silvered opaline dial, black Roman numerals, blued steel sword-shaped hands, and beaded crown set with a synthetic blue spinel cabochon all reflect the maison’s historical design codes in a more accessible execution. Officially replaced by the Tank Must in 2021, it remains highly sought-after among watch enthusiasts and retains a place in the Auberi selection.

How to Choose Your Tank Solo?

The first criterion is the case size. The Tank Solo comes in three formats. The small model (31 × 24.4 mm, thickness 5.55 mm) suits slender wrists, generally under 16 cm, and fits within a feminine or unisex approach. The large model (34.8 × 27.4 mm, same thickness) is the most versatile: it works on most wrists and remains suitable for classic masculine wear. The XL model (31 × 40.85 mm) offers the strongest wrist presence and is aimed at wrists from 17 cm and above.

The type of movement is determined by size. The small and large models feature a quartz caliber, reliable and precise, allowing for an ultra-thin case (5.55 mm) with no need for winding—a single battery lasts several years. The XL model houses an automatic movement (caliber 1847 MC or ETA 2892 base), recognizable by the date window at 6 o’clock and a central seconds hand.

The case material influences both budget and style. Stainless steel offers a clean, contemporary look, ideal for everyday wear. Two-tone steel/yellow gold or steel/rose gold versions add a dressier touch. Full 18-carat gold versions sit in a more formal segment.

Usage should also be considered. With water resistance of 30 meters (3 bar), the Tank Solo can handle everyday splashes but is not designed for swimming. It is a city, office, and evening watch. The sapphire crystal effectively protects the dial from scratches.

Finally, availability. As the collection has been discontinued by Cartier, supply now depends on remaining stock and the certified pre-owned market. Auberi prioritizes complete pieces with original box and warranty.

Which Tank Solo for Which Profile?

Slim wrist (< 16 cm) or occasional wear → small quartz model in steel
Medium wrist and versatile daily wear → large quartz model in steel
Wrist > 17 cm or preference for a mechanical movement → XL automatic model, caliber 1847 MC
Looking for a dressier touch on an accessible base → large two-tone steel/yellow or rose gold model

FAQ

Is the Tank Solo still produced by Cartier?
No. The collection was discontinued in 2019 and officially replaced by the Tank Must in 2021. New pieces available today come from remaining stock at authorized retailers or the certified pre-owned market, such as the selection offered by Auberi.

What is the difference between the Tank Solo and the Tank Must?
The Tank Must, its successor, retains a steel case but features more rounded brancards (closer to the Tank Louis Cartier), a sharper cabochon, and a QuickSwitch system for tool-free strap changes. The large Solo measures 34.8 × 27.4 mm, compared to 33.7 × 25.5 mm for the large Tank Must.

Is the Tank Solo suitable for both men and women?
Yes. The small model (31 × 24.4 mm) is mainly worn by women, the large model (34.8 × 27.4 mm) is unisex and suits most wrists, and the XL (40.85 × 31 mm) is more masculine due to its presence and automatic movement.

What budget should you plan for a Tank Solo?
Expect from €2,300 to €2,600 for a small or large quartz steel model, around €3,100 to €3,600 for an XL automatic steel model, and between €5,400 and €8,400 for yellow or rose gold versions. Exact prices depend on condition, accessories, and availability.

Is the Tank Solo a good first Cartier purchase?
Yes. Its design faithful to the original Tank, slim rectangular case, and easy-to-maintain quartz movement make it a logical entry into the Cartier universe. Its increasing rarity since discontinuation also enhances its appeal among collectors.

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