Strap for Automatic Hi Beat 36000 Titanium/ Black / Bracelet

The lug width of the Grand Seiko SBGH245 is 20 millimetres. This measurement represents the distance between the two lugs of the titanium case and is the critical parameter for selecting any compatible strap. The correct measurement is taken with a digital calliper, from the interior base of one lug to the other, excluding any centralisation features.

For this model, alligator represents the formal solution par excellence: its ordered scales echo the minimalist aesthetic of the titanium case. Alternatively, vegetable-tanned calf leather offers tactile versatility and a natural patina that evolves over time. For those seeking more durable solutions, shell cordovan guarantees a unique stratified patina. Vulcanised rubber straps are ideal for aquatic environments, preserving the technical vocation of the model.

Strap replacement requires the use of a spring bar removal tool. Position the watch on a soft surface, gently remove the elastic spring bars connecting the strap to the case lugs, then extract the previous strap and insert the new one, ensuring correct alignment of the lug holes. This operation should be performed with due care to avoid damaging the titanium case or the new spring bars.

Yes, any strap with a 20mm lug width is compatible with the Grand Seiko SBGH245, provided it respects the declared width. High-quality aftermarket straps – in alligator, calf, shell cordovan or rubber – fit perfectly onto the case lugs. We recommend always verifying that the chosen strap does not present excessive manufacturing tolerances, as this could cause unwanted lateral movement.

The lifespan of a leather strap depends on the quality of the tanning, the type of leather and usage. An alligator or vegetable-tanned calf strap, worn regularly, maintains optimal performance for 5–7 years. Shell cordovan, thanks to the natural density of the fibre, can last 8–10 years. Exposure to perspiration, humidity and UV rays accelerates ageing. Vulcanised rubber straps, if regularly maintained, last 10–15 years without perceptible degradation.