Strap for Lunova Tag/Datum Black / Strap

The lug width of the Mühle Glashütte Lunova M1-43-26-LB is 20 millimetres. This measurement is standardised for contemporary sport-formal watches and ensures excellent versatility in use. It is crucial to select straps with precise tolerances for this specific measurement to avoid undesired lateral movement and preserve the integrity of the titanium case.

The most appropriate strap depends on the intended usage. For formal contexts, vegetable-tanned alligator (Cognac or Mahogany) or burgundy shell cordovan is recommended. For sporty use, black vegetable-tanned calf or a NATO strap in ballistic nylon is appropriate. Grey FKM rubber offers daily versatility whilst keeping the blue dial as the focal point. All straps must be 20 millimetres wide and compatible with fine watchmaking standards.

Strap replacement requires a spring bar tool with a curved flat tip. Position the tool against one of the spring bars (the small spring-loaded pin holding the strap), gently press downward to release tension, and extract the strap from the lugs. Repeat on the opposite side. Insert the new strap by aligning the holes with the lugs, then use the tool to repress the spring bar until fully secured. This operation should be performed on a soft surface to prevent case scratching.

Yes, aftermarket straps compatible with the 20-millimetre lug width can absolutely be used, provided they are manufactured to precise tolerances and in materials consistent with the watch's positioning. Artisanal straps in vegetable-tanned leather, shell cordovan, alligator, or technical materials such as FKM rubber are fully compatible. It is essential to verify that the strap lugs have an exact 20-millimetre width to ensure perfect fit without lateral play.

The lifespan of a leather strap depends on intensity of use, climatic conditions, and material quality. A high-quality artisanal vegetable-tanned leather strap typically lasts 3-5 years with regular daily wear. Shell cordovan is more durable and can last 5-7 years. Leather naturally develops a patina over time, enhancing aesthetic character. Factors such as excessive humidity, prolonged direct sunlight exposure, and intensive perspiration reduce longevity. Strap replacement is straightforward and permits renewal of the watch's aesthetics according to seasonal preferences.