Ball Watch
Fireman CM3090C-L1J-WH— lug 22mm

The lug width of the Ball Watch Fireman CM3090C-L1J-WH is 22mm. This measurement corresponds to the internal distance between the case attachments and is essential for selecting compatible straps. Ensure accurate measurement by positioning a calliper perpendicular to the lugs, measuring edge to edge.

The ideal strap depends on usage: alligator with vegetable tanning in brown or burgundy offers formal elegance; shell cordovan guarantees patina and durability over time; a NATO strap in German cotton ensures tactical practicality; vulcanised rubber of aviator grade provides grip in wet conditions. All must be sized to a 22mm lug width.

The CM3090C-L1J-WH lugs are secured via internal spring bars. Using a dedicated spring bar extractor tool, gently press the spring towards the centre, disconnect the old strap and insert the new one by aligning the lug holes with the attachments. Do not force to avoid damage to the case.

Yes, any strap with a 22mm lug width is compatible, provided the attachments are internally unobstructed. Verify that the strap does not have excessive thickness at the lug area, as this could create friction with the case flanges during movement.

A quality leather strap (alligator, shell cordovan, vegetable-tanned calf) worn 4-5 days per week lasts between 3 and 5 years. Longevity increases if the strap is alternated with other models, allowing the leather to dry completely between uses. Periodic maintenance (cleaning and conditioning) extends useful life.