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
![[Uncle] Seiko JDM Speedtimer Bracelet (6139-600x, 6139-603x)](https://cdn.shopify.com/s/files/1/1794/4993/files/Speedtimer-1_0487a434-3640-4d83-84e0-bed137b06868.jpg?v=1711675446&width=480)
