Seiko JDM Speedtimer Bracelet (6139-600x, 6139-603x)
Specs:
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Lug width to buckle: 19mm (widest 22mm) to 16mm
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Length: 180mm
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Min length after adjusted: 120mm
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Buckle style: Pressure clasp
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Thickness: 3.2mm
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Net Weight: 50 grams
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Finish: Brushed metal
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Spring bar diameter: 1.8mm
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Lug end style: Standard hollow curved end
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Adjustment type: 6 removable links-- pin type adjustment
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Material: 316L Stainless Steel, all solid links, standard (hollow) end links
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Designed to fit: 6139-600x and 6139-603x
At the end of the 1960's, Seiko released a swanky new Chronograph called the Speedtimer. These came in several colors with minor variations added along the way. One of the earlier and more rare examples had a unique bracelet that came only on JDM models (Japan domestic market) of which all had "Sports 5" plus "Speedtimer" on the dials. They were used on 6139-6000, 6139-6030, 6139-6031, and 6139-6032 models.
What I am offering here is my own take on the classic (and rare) Speedtimer bracelet. While I always thought the look was unique, I was never a fan of the end-links. So, I came out with my own. I present to you an homage to the classic JDM bracelet with an Uncle Seiko twist.