Cartier, while known for jewelry, has a substantial watchmaking history. The Santos, originally for aviator Alberto Santos-Dumont, is a core design. The Santos 100, introduced in 2004, offers larger models.

Cartier's Santos 100, the medium size here, is a variation on the original Santos design. It's a square case, a known Cartier style, in this case combining rose gold and aDLC coated steel.

The dial is black, with Roman numerals, the "IIII" at 4 o'clock being a typical Cartier design choice. Rose gold hands, with a light application of lume, are used for hours and minutes. The crown, also rose gold, features a black sapphire cabochon. It handles winding and time setting, including a hacking seconds function.

The strap is a black nylon with a leather lining. It's a comfortable option, keeping the watch light on the wrist. I find the nylon strap adjusts easily, a plus for daily wear. The deployment clasp has a rose gold accent with aDLC screws.

The case, a mix of brushed and polished aDLC coated steel, is designed to be scratch resistant. The caseback is solid, with the Cartier name and model details.

This watch is versatile in terms of style; it works in both casual and more formal settings. The main point for buyers is the movement and the price. It uses a modified ETA 2892. This is a reliable movement, but at this price point (over $9,000), some buyers might expect an in-house option. Cartier does use in-house movements in other lines.

There are larger and more complicated Santos 100 models available, which usually have more commanding presence. This medium size offers a balance of presence and wearability.

In the current market, this watch is a design-focused piece. If the design and size fit your needs, then it could be a good buy.