Seiko Alpinist SARB017 (Green Dial)

The Seiko Alpinist SARB017 is a Japanese-domestic-market automatic watch produced from 2006 to 2018, built around Seiko's 6R15 caliber. It pairs a green sunburst dial with gold-tone cathedral hands and an internal rotating compass ring controlled by a second crown at 4 o'clock, housed in a 38mm stainless steel case rated to 200m with a curved sapphire crystal.

The Alpinist name traces back to Seiko's Laurel of 1961, which Teddy Baldassarre describes as "the first 'Sports Watch' for Seiko," fitted with arrow markers at the 12, 3, 6 and 9 positions on black and cream dials. The Alpinist Champion 850 followed in 1963–1964, adding bold central lines that extended toward the hour markers, later joined by a gold variant.

Seiko revived the concept in 1995 as the so-called Red Alpinist, characterized by red script near 6 o'clock and Arabic numerals at select positions. This iteration set the template for the design that would follow a decade later.

In 2006 Seiko released the sixth-generation Alpinist line built around the automatic 6R15 caliber, comprising three references: the SARB013, SARB015 and SARB017. According to Teddy Baldassarre, the green-dial SARB017 became the standout of the trio, combining a green sunburst dial with cathedral hour hands.

We Know Watches reports that Seiko discontinued the SARB017 in 2018. In 2020 Seiko introduced a set of 38mm bezel-less "Baby Alpinists" (SPB155, SPB157 and SPB159) that removed the internal compass and the secondary crown at 4 o'clock, per Teddy Baldassarre.

The SARB017 is powered by Seiko's 6R15 automatic movement, a 23-jewel caliber that supports self-winding, manual winding and hacking seconds, as listed by US dealer Long Island Watch. These features place it a tier above Seiko's entry-level 7S26, which lacks both hand-winding and a stop-seconds function.

Millenary Watches states the 6R15 beats at 21,600 vph and carries a power reserve of roughly 50 hours. The lower 21,600 vph frequency, compared with the 28,800 vph of many ETA movements, produces a slightly less fluid sweep of the seconds hand but is widely regarded as a durable, service-tolerant workhorse.

The movement drives central hours, minutes and seconds plus a date display at 3 o'clock, and its manual-winding capability lets the watch be started without wrist motion.

The reviewer at Small Toys for Grown Men reports that the 38mm case "sits admirably" on a roughly 6.7-inch wrist, while cautioning that it is "probably too small for people with wrists 7.3 [inches] and above." After three months of daily wear the same reviewer says they remained "still regularly amazed" by the dial, which shows "different tones depending on the way sunlight hits it."

WatchReviewBlog echoes the dial impression, describing the "beautiful, sunburst green colour of the dial, which appears to be a different shade when viewed from different angles," and notes that the gold hands lend the watch a "classical feel." That review adds that the compass ring's "simplistic design" has drawn interest even from enthusiasts with no intention of using the feature.

Opinion on the compass bezel's practicality is mixed. The Small Toys for Grown Men reviewer found the markings "much too small to be useable" and concluded the ring is "mostly decorative." Both reviews are critical of the factory strap: Small Toys for Grown Men describes it as having a "dirty feeling" and being "so stiff that the watch doesn't sit properly on the wrist," and reports replacing it with aftermarket leather.

The 2006 Alpinist line comprised three references sharing an identical 38mm case and the 6R15 movement, according to We Know Watches. The SARB013 carried a cream or ivory dial with silver-tone hands, the SARB015 a black dial with a red-tipped seconds hand, and the SARB017 the green sunburst dial. Teddy Baldassarre notes the SARB015 used "shark tooth" hour hands, distinguishing it from the cathedral hands of the green model.

After the 2018 discontinuation, Seiko folded the Alpinist into its Prospex range. We Know Watches identifies the SPB121J1 as the modern green-dial successor, which retained the internal compass bezel but grew to a 39.5mm case and switched to the 6R35 caliber with a 70-hour power reserve and a sapphire crystal.

Seiko also released 38mm "Baby Alpinist" models in 2020 — the SPB155, SPB157 and SPB159 — which dropped the internal compass ring and the 4 o'clock crown entirely, per Teddy Baldassarre.

The SARB017 was a Japanese-domestic-market model rather than part of Seiko's official US catalog, so buyers outside Japan sourced it through grey-market dealers and the secondary market. We Know Watches lists its original JDM retail price at ¥40,000–¥45,000.

With production ended in 2018, the reference is now available only used or new-old-stock. We Know Watches cites used examples in the range of \$800–\$1,300, with full-kit examples that include the original strap and packaging commanding \$1,100–\$1,300. US dealer Long Island Watch has offered discounted "scratch and dent" examples of discontinued stock.

For buyers who want a new watch with a warranty, We Know Watches points to the successor SPB121J1, which keeps the green dial and compass bezel while adding a longer-running 6R35 movement and sapphire crystal. Prospective buyers should confirm condition, movement service history and strap originality on any used SARB017, as prices vary with completeness of the kit.