18/03/2026
The debut of the Speedtimer in 1969 marked a pivotal moment in Seiko's watchmaking heritage, and these latest Speedtimer designs are the first to feature the robust and reliable 6R in house automatic calibre.
With a depth of just 11.95mm, these timepieces are the slimmest ever 6R models in the brand’s history, and with its super-hard coating, the flowing case shape of this model was first used in 1972 on the famous Seiko 'Panda.'
Under the curved sapphire glass, a silver-white & black dial is encircled by a countdown timer function. The strong Lumibrite coating on the inner-ring reference triangle allows for the countdown timer to be used with clarity during both day and night.
Compact and comfortable, this Speedtimer has a diameter of 39.5mm, and a water resistance of 200m. The in-house 6R55 automatic calibre is accurate to -15/+25 seconds per day, with a three day power reserve.
Discover more - https://agiuswatches.com/product/seiko-prospex-spb513j1-compact-countdown-in-grey-white-contrast/
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