Produced 2017–2021. SBXB129 is part of Seiko's 2017 Astron Executive Line 8X Series chronograph launch. The official Seiko table lists SBXB129 alongside SBXB127 and SBXB131 with a titanium case and bracelet, black dial, June 23, 2017…
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Specifications, configurations, image gallery, market listings, lineage and notable appearances are part of the full reference.