Sinn
Diving Watches 1020.040— lug 22mm

The lug width of the Sinn 1020.040 is 22mm. This width allows you to mount generously-sized straps, ideal for wearing the watch over a neoprene wetsuit during diving operations. The measurement is verified by placing a calliper between the attachment pins, measuring from the centre of one pin to the other.

The most suitable strap depends on intended use: alligator leather in dark grey or navy offers elegance in formal settings; a robust canvas NATO is pragmatic and waterproof; a technical rubber strap ensures constant grip underwater. Shell cordovan with vegetable tanning develops a captivating patina over time and is excellent for those who appreciate natural leather ageing.

Strap replacement is performed by removing the attachment pins using a spring bar tool. Position the tool from the bottom of the pin and lift gently until the spring releases, then extract the pin and replace the strap. Ensure the pins click firmly into position on the new strap. Never force the pins as they may deform.

All straps with a 22mm lug width are compatible with the 1020.040. The Milano Straps collection offers alligator, vegetable-tanned calf, shell cordovan, canvas NATO and vulcanised rubber, all cut to this width. Always verify the measurement before purchase.

Durability depends on material and usage. Quality alligator with vegetable tanning lasts 3-5 years under normal conditions; shell cordovan reaches 7-10 years. A robust canvas NATO is practically indestructible. Frequent exposure to water, sunlight and salt accelerates ageing. Regular maintenance with natural oils significantly extends strap life.