Opens in a new tab

Comparisons

6 min read
07.08.2026

Víctor del Ser

Contributor

Laco Frankfurt GMT 43 mm vs. 40 mm

TWO SIZES, ONE AND THE SAME PHILOSOPHY

Laco has completed the Frankfurt GMT family with the arrival of the Frankfurt 40 GMT, a more compact version that joins the original 43 mm reference and which, for the first time, allows you to choose the case size without giving up any features. Since its launch, it has become one of the most recognisable models from the Pforzheim manufacture: a pilot watch with dual time zone. The original 43 mm model was honoured with the Red Dot Award for product design, and that same visual and technical identity is now also available in a 40 mm format, conceived for smaller wrists or for those who prefer a more discreet profile.

Laco's idea with this extension of the range is not to create a different model, but to offer the same experience in two sizes. Both versions share movement, features, finishes and starting price, so the choice between one and the other comes down purely to wrist and style preferences.

TECHNICAL SPECIFICATIONS

Both versions of the Frankfurt GMT are fitted with the automatic Laco 330 caliber, based on the Swiss Sellita SW330-2 movement, with 25 jewels and a 42-hour power reserve. The case, in stainless steel with the brand's characteristic dark sandblasted finish, features anti-magnetic protection, a double-domed sapphire crystal with anti-reflective treatment on both sides, and a protected, screw-down double crown. Water resistance is 20 ATM (200 metres) in both cases. The Frankfurt 43 GMT measures 43 mm in diameter, 12.5 mm thick and 50 mm lug to lug, weighing 100 grams. The Frankfurt 40 GMT reduces these figures to 40 mm in diameter, 11.9 mm thick and 47 mm lug to lug, weighing 82 grams, with a 20 mm lug width on both versions. The dial is available in black or matte grey in both sizes, with Arabic numerals and indices treated with Superluminova C3, thermally blued and luminescent hour and minute hands, a seconds hand with an aeroplane silhouette and a GMT hand tipped in orange Superluminova.

Both models come with a black water-resistant Fibertech strap, a stainless steel buckle, and a second grey and orange nylon strap included.

PROS AND CONS OF THE FRANKFURT 43 GMT

The 43 mm version retains the visual presence that made the original model famous: a larger case surface allows for a more uncluttered dial and even easier reading of the two time zones. Something especially appreciated by those who wear glasses or prefer purer aviation watches.

Its larger size also translates into a feeling of robustness on the wrist, in keeping with the tool-watch character Laco has cultivated since 1925. On the other hand, its 50 mm lug-to-lug and 100 grams of weight make it a demanding piece for wrists smaller than 17 cm, where it may feel bulky or overhang at the ends of the case.

PROS AND CONS OF THE FRANKFURT 40 GMT

The Frankfurt 40 GMT solves the main criticism levelled at the original model: its size. At 40 mm in diameter, 47 mm lug to lug and only 82 grams in weight, it is considerably more versatile, suiting a wider range of wrists and gaining in comfort for everyday wear. Its main drawback is precisely the flip side of its virtue: the smaller case means a more compact dial, so the two time zones and the remaining indications are somewhat tighter, a nuance that can be noticed when reading at a glance compared with the 43 mm model.

CONCLUSION

More than a replacement, the Frankfurt 40 GMT is an intelligent extension of a model that already worked: Laco has not had to sacrifice movement, water resistance, materials or price in order to shrink the case, something that does not always happen when a brand downsizes one of its flagship watches. In practice, the choice between the two versions comes down to a question of wrist size and personal taste: anyone looking for presence and the more "cockpit instrument" character of the original Frankfurt GMT will find the 43 mm to be its truest version, while those who prioritise everyday comfort and a more universal size now have, for the first time, an equally complete alternative in 40 mm.

About the author

Víctor del Ser

Contributor Víctor del Ser is an economist, collector and watchmaking writer, with a particular soft spot for Swiss watchmaking. He shares his passion and his collector's eye on his YouTube channel and on Instagram (@vic.swissmade).

Next read

who is behind the magazine

Talk to me directly.
10
% off
On your first online purchase
FREE SHIPPING◆OFFICIAL WARRANTY◆INSTALMENT PAYMENT◆FREE SHIPPING◆OFFICIAL WARRANTY◆INSTALMENT PAYMENT◆FREE SHIPPING◆OFFICIAL WARRANTY◆INSTALMENT PAYMENT◆FREE SHIPPING◆OFFICIAL WARRANTY◆INSTALMENT PAYMENT◆FREE SHIPPING◆OFFICIAL WARRANTY◆INSTALMENT PAYMENT◆FREE SHIPPING◆OFFICIAL WARRANTY◆INSTALMENT PAYMENT◆FREE SHIPPING◆OFFICIAL WARRANTY◆INSTALMENT PAYMENT◆FREE SHIPPING◆OFFICIAL WARRANTY◆INSTALMENT PAYMENT◆FREE SHIPPING◆OFFICIAL WARRANTY◆INSTALMENT PAYMENT◆FREE SHIPPING◆OFFICIAL WARRANTY◆INSTALMENT PAYMENT◆

Subscribe and receive your code with access to launches and exclusive offers.

No spam · Unsubscribe whenever you like WWM

Welcome!

Your discount code is on its way.

Check your inbox.

–10%
First purchase