Understanding Watch Case Proportions: The Heartmatique’s 40mm Case

A watch’s case dimensions describe different things. Diameter measures across the case, thickness describes its listed depth, lug width is the space between the lugs, and lug-to-lug measures the case from one end of the lugs to the other.

Carter Farrago lists the same dimensions for all Heartmatique references: 40mm diameter, 12.8mm thickness, 20mm lug width and 48mm lug-to-lug. These figures describe the case and its attachment points; they don’t, on their own, determine how a watch will fit an individual wrist.

Heartmatique case dimensions at a glance

These specifications appear on the  Heartmatique product pages.

What does a 40mm case diameter mean?

The 40mm figure is the case diameter: the measurement across the watch case. It gives one useful point of comparison when looking at watch dimensions, but it doesn’t describe the full outline of the watch.

The shape and length of the lugs also affect the overall measurement. That is why diameter is best read alongside the Heartmatique’s 48mm lug-to-lug figure.

What does the 48mm lug-to-lug measurement tell you?

Lug-to-lug measures the distance from one end of the lugs to the other. On the Heartmatique, that distance is listed as 48mm.

It is a separate measurement from the 40mm case diameter. When comparing watches, checking both numbers gives a clearer picture of the case’s footprint than looking at diameter alone.

What does 12.8mm thickness mean?

The Heartmatique’s listed case thickness is 12.8mm. Thickness describes the case’s depth, rather than its width across the wrist.

The product pages don’t specify whether this measurement includes every external component, such as the crystal. For precision, this article refers to it as the listed case thickness.

The Miyota 82S7 movement itself has a listed height of 5.67mm. That is the movement measurement, not the thickness of the complete watch. The final case dimension is listed separately by Carter Farrago.

What does a 20mm lug width mean?

The 20mm lug width is the distance between the lugs where a strap attaches. Carter Farrago also lists a 20mm strap width in the strap specifications.

The product pages do not list a separate bracelet width. Check the individual product page for the available configuration and its current details.

Case material and water resistance

The Heartmatique product pages list the case material as 316L stainless steel and water resistance as 50m / 164ft.

Water resistance is a stated rating, not a promise that a watch is waterproof. Follow Carter Farrago’s care guidance and check the product information before exposing the watch to water.

How to read the measurements together

Think of the dimensions as measurements in different directions:

• 40mm diameter: across the case.

• 48mm lug-to-lug: from one end of the lugs to the other.

• 12.8mm listed thickness: the case’s stated depth.

• 20mm lug width: the space between the lugs.

No single number describes every aspect of a watch’s size. For the Heartmatique, the product pages provide all four figures, giving readers a consistent set of measurements to compare across references.

Heartmatique case dimensions by model

The current product pages list the same case dimensions for all ten references: