Strap for Seamaster Diver 300M Quartz 28 Stainless Steel / Black / Bracelet

The lug width of the 2284.50.00 is 20 millimetres. This is a specific dimension of the 28mm case on this vintage model. To verify the measurement, position a digital calliper between the two lugs on the centre line, from the centre of one lug seat to the centre of the other, without including the lateral protections of the lugs themselves.

For the 2284.50.00 we recommend vegetable-tanned alligator for formal elegance and patina development over time, box calf for versatility and daily wear resistance, or FKM rubber to emphasise the diving character. Dark brown shell cordovan represents the choice of discrete maximum luxury for discerning collectors.

Position a ruler or digital calliper perpendicularly between the two lugs, from the centre of the first lug seat to the centre of the second lug seat. The value obtained is your lug width: for the 2284.50.00 it must be exactly 20mm. Make sure not to include the lug shoulders in the measurement. It is advisable to measure at least twice to confirm the data.

Aftermarket 20mm straps are fully compatible with the 2284.50.00. Milano Straps artisanal leather straps offer superior quality, customisation and aesthetic versatility compared to dated OEM straps. The ability to choose premium leathers, colours and finishes allows you to adapt the Seamaster to any context, while maintaining perfect dimensional compatibility.

A quality leather strap, with vegetable tanning, has a lifespan of 3-5 years in moderate daily use. Longevity depends on the material chosen, sun exposure, humidity and the number of weekly rotations. Alligators develop elegant patina and can last 5-8 years; box calves resist 4-6 years. Milano Straps guarantees 18 months on all artisanal straps and recommends quarterly rotation between straps to extend the life of each one.