Seiko JDM Speedtimer Bracelet (6139-600x, 6139-603x)

Seiko JDM Speedtimer Bracelet (6139-600x, 6139-603x)Uncle's notes: 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

Uncle's notes:

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. 

What's included:

One bracelet, one pair of end-links, one pair of 1.8 mm spring bars

Specs

• Lug width to buckle:  19mm (widest 22mm) to 16mm 
• Length:  180mm
• Min length after adjusted:  120mm
• Buckle style:  Pressure clasp
• Thickness:  3.2mm
• Net Weight:  50 grams
• Finish:  Brushed metal
• Spring bar diameter:  1.8mm 
• Lug end style:  Standard hollow curved end
• Adjustment type:  6 removable links-- pin type adjustment
• Material: 316L Stainless Steel, all solid links, standard (hollow) end links
• Designed to fit: 6139-600x and 6139-603x