Strap for Terranaut II Trail Black / Bracelet

The lug width of the M1-40-34/1-MB is 22mm. This measurement is essential for selecting a compatible strap. It is measured from the inner edge of one lug to the inner edge of the other using a digital calliper. It ensures the strap sits perfectly in the case without lateral play.

There is no universal choice. For formal use we recommend black alligator or vegetable-tanned leather (such as Burnt Tobacco). For humid or exposed environments, FKM or Cordura rubber. For everyday versatility, a cotton-synthetic NATO strap. The choice depends on your usage context and the patina development you desire over time.

The M1-40-34/1-MB features standard spring bars. Position the watch on a press or spring bar tool, gently remove the bar on one side, remove the old strap, insert the new one (ensuring it is 22mm), and reinsert the bar. The operation takes 2-3 minutes and requires no expensive tools.

Yes, provided it is exactly 22mm lug width. Verify that the thickness does not exceed 5mm, as the case has slightly rounded lugs. We recommend specialised strap makers who respect rigorous manufacturing tolerances, avoiding generic solutions that could create friction.

A quality leather strap, whether vegetable-tanned or alligator, typically lasts 4-7 years in daily use, varying based on climate, humidity and maintenance. Vegetable-tanned leather develops patina over time, improving aesthetically. We recommend drying the watch after humid exposure and applying conditioner every 12-18 months to maintain elasticity and lustre.