Strap for OW P-104

The lug width (misura ansa) of the Ollech & Wajs Aviation OW P-104 is 20 millimetres. This measurement represents the distance between the two lugs protruding from the case and is essential for strap compatibility. To verify it, use a digital calliper and measure the external distance between the case's metal bases.

The ideal strap depends on your use and personal taste. For a classic and formal approach, we recommend alligator in medium or dark brown tones, which emphasises the avionic heritage of the piece. For a more versatile choice that develops beautifully over time, vegetable-tanned calf leather creates a magnificent patina. For sporty contexts, a NATO strap in grey-blue nylon remains faithful to the watch's history, whilst vulcanised rubber is the most practical and durable solution for intensive daily wear.

Changing the strap on the P-104 requires a spring bar tool. Position the watch on a stable surface, insert the flat tip of the tool into the hole of the lug opposite the strap you wish to remove, push slightly to release the spring, then extract the metal bar. Repeat on the other side. To install the new strap, align the holes and reinsert the spring bar carefully, ensuring it is firmly locked on both sides.

Absolutely. Any strap with a 20-millimetre lug width is compatible with the P-104, regardless of manufacturer. The aftermarket offers high-quality solutions: noble leathers such as alligator and shell cordovan, NATO straps in durable nylon, and certified vulcanised rubber. Technical compatibility is guaranteed by matching the lug width; the choice depends entirely on your personal style and use context.

The durability of a leather strap depends on the type of leather, frequency of use, and maintenance. A quality alligator, worn daily, maintains structural integrity for 4-6 years before showing signs of significant wear. Vegetable-tanned calf ages more visibly but remains functional for 5-7 years with regular care. Vulcanised rubber resists up to 8-10 years of intensive use. Periodic maintenance (gentle cleaning, conditioning with specific creams) significantly extends the strap's lifespan.