Formex
Element 1200.5.8017.311— lug 25mm
Formex Element 1200.5.8017.311: 25mm strap. Alligator, box calf, shell cordovan and rubber, cut and stitched in Milano. Choose your leather.
Artisanal Note
"This model requires a precise 25mm lug width to preserve the original sartorial balance."
Technical Specifications
Formex 1200.5.8017.311The essential strap measurement.
Browse 25mm straps →1200.5.8017.311
ETA caliber 7750 Hours, Minutes, Small Seconds | Date, Day | Chronograph
The Heritage
FAQ
What is the lug width of the Formex Element 1200.5.8017.311?
The Formex Element 1200.5.8017.311 features a lug width of 25 millimetres, measured between the inner edges of the lugs where the spring bars insert. To verify this measurement, use a calliper positioned between the case lugs: the distance must be precisely 25mm. This specification is relatively uncommon in the tool watch market, requiring specialised strap solutions.
Which strap is most suitable for the Formex Element 1200.5.8017.311?
The optimal strap choice depends on application: for formal and tactile contexts, superior-grade alligator offers comfort during extended wear; for professional deployments, a cotton-polyester NATO allows rapid changes; for total water resistance, vulcanised rubber represents the technical choice. In all cases, favour models with deployante clasps rather than simple pin buckles, ensuring ergonomic and secure fastening.
How do you change the strap on the Formex Element 1200.5.8017.311?
Strap replacement involves removing the spring bars (small elastic bars) from the case lugs. A specialised tool (spring bar remover) is required to gently push one of the two lateral pins until the bar disengages from its seat. Never use screwdrivers or sharp objects, which risk scratching the titanium case. Insert the new strap, aligning its ends with the lugs, and reposition the spring bars until fully anchored.
Are aftermarket straps available for the 25mm lug width?
Yes, Milano Straps offers a comprehensive catalogue of aftermarket straps for the 25mm specification, including alligatore, shell cordovan, vegetable-tanned calf, tactical NATO and Formula rubber options. All straps are custom-manufactured for 25mm lugs and compatible with the Formex spring bar system. Delivery times range from 5 to 7 working days. Consult the dedicated collection to view available colour and material options.
What is the typical lifespan of a leather strap for the Formex Element 1200.5.8017.311?
A quality leather strap (alligatore, calf, shell cordovan) maintains full functionality for 18–24 months of daily wear, with variation dependent on climate exposure and perspiration levels. Vegetable-tanned leather develops a natural patina through ageing, enriching the strap's aesthetic character. To maximise longevity, periodically apply a specialised conditioner and store the watch in dry environments. In cases of accelerated deterioration, Milano Straps provides restoration and replacement services whilst maintaining the same belt configuration.