Technical Archive

SevenFriday
P-Series P3/BB— lug 28mm

SevenFriday P-Series P3/BB: 28mm strap. Alligator, box calf, shell cordovan and rubber, cut and stitched in Milano. Choose your leather.

Artisanal Note

"This model requires a precise 28mm lug width to preserve the original sartorial balance."

Lug Width

28 mm

The essential strap measurement.

Browse 28mm straps →

Reference

P3/BB

Movement

Miyota caliber 82S7 Additional 24 Hour Hand (fixed), Small Seconds, Hours, Minutes

The Heritage

The SevenFriday P3/BB belongs to the P-Series of the Swiss brand. It features the automatic Miyota 82S7 caliber with indication of hours, minutes, small seconds and a fixed 24-hour hand. The lugs measure 28mm in width.

FAQ

What is the lug width of the SevenFriday P-Series P3/BB?

The SevenFriday P3/BB features a 28-millimetre lug width, an unusual and model-specific dimension. This is the standard width between the two lugs (lateral attachments) of the case. This measurement falls outside conventional standards (20mm, 22mm, 24mm) and is integral to the radical design philosophy of the model. Verify by measuring the internal space between the lugs or by consulting the official SevenFriday documentation.

Which strap type is recommended for the SevenFriday P3/BB?

The most appropriate strap types for the P3/BB are: alligator in black or dark brown (maximum contrast with stainless steel), vegetable-tanned calf leather (develops progressive patina), grey or black NATO fabric (amplifies military and anti-decorative ethos), dark grey or black rubber (maintains sport-industrial DNA). Choice depends on context: alligator for controlled elegance, calf for aesthetic evolution over time, NATO for functional casualness, rubber for sport-formal versatility.

How do you change the strap on the SevenFriday P3/BB?

Strap change is performed using a standard spring bar removal tool or a non-abrasive pointed implement. Position the watch on a soft surface to avoid scratches. Locate the leaf springs (spring bars) connecting the strap to the lugs, gently press one side to loosen the spring, remove the old strap, align the new strap (28mm) with the lugs, and reinsert the springs ensuring they click correctly on both sides. Verify that the strap is stable before wearing the watch.

Are there aftermarket straps compatible with the SevenFriday P3/BB?

Yes, numerous artisanal strap manufacturers produce 28mm straps compatible with the P3/BB. Milano Straps offers a specialised collection of straps in leather (alligator, vegetable-tanned calf), NATO, and rubber, all calibrated for the 28mm lug width. These aftermarket straps guarantee superior artisanal quality, aesthetic customisation, and certified durability, representing a possible evolution beyond OEM straps.

What is the average lifespan of a leather strap for the SevenFriday P3/BB?

A quality leather strap (alligatore, vegetable-tanned calf) worn daily lasts an average of 3-5 years. Durability depends on: frequency of use, climatic conditions (humidity damages leather), maintenance (periodic cleaning with dry soft cloth), exposure to sun and water. A vegetable-tanned strap develops noble patina progressively, whilst alligator maintains aesthetic stability longer. To extend lifespan, rotate different straps, protect from prolonged humidity, and occasionally apply conditioning treatments specific to noble leather.