The Surfrider Koa Wood Watch – 42mm

The Surfrider is our original koa wood watch — a 42mm timepiece inspired by the golden age of Hawaiian surf culture. Every Surfrider features a curly Hawaiian koa wood face, sapphire crystal, Japanese Miyota quartz movement, and 10ATM water resistance. Hand-finished in our shop in Honolulu, Hawaii with Big Island Koa. Rated 4.8 across 3,400+ customer reviews.

Yes. The Surfrider is water-resistant to 10ATM (100 meters / 330 feet). Safe for swimming, snorkeling, diving and everyday water exposure. The koa wood face is sealed within the body which protects it against moisture. If you drown it, we'll replace it.

All four Surfrider variants share the same 42mm case, sapphire crystal, Japanese Miyota movement, and 10ATM water resistance — only the case finish differs. OG (Silver) is the original polished and brushed stainless steel. Blackout is a polished and brushed black stealth finish. Summer pairs silver with a blue tonal accent. Sunset (Copper) has a warm rose-copper tone. Each variant is available with silicone, brown leather, black leather, navy leather, or stainless steel bands.

The idea was a tough watch that stands up to punishment. Everyday care like wiping with a soft dry cloth or washing after being in the ocean are good ideas. Avoid leaving the watch in direct sun for extended periods (like on a dashboard for days). Avoid harsh chemicals (bleach, acetone), saunas, and extreme temperature swings (although we take it in the sauna and cold plunge without issue). The koa is sealed and protected.

The 42mm Surfrider is the most versatile size. It isn't overpowering with heft and can accommodate smaller wrists as well as larger ones. Women sometimes like its size as a 'boyfriend watch' and it fits the bill. The band fits wrists in the 6.5-8.5 inch range comfortably (measure around your wrist bone). Our silicone bands extend to 9 inches; leather bands adjust in the 6.5-8.5 range.

All three Pono Woodworks watches share the same exquisite curly Hawaiian Koa wood, hand-finished craftsmanship (in our Honolulu shop), and Japanese Miyota movements. Where they differ:

• Surfrider (42mm) — Our original surf-inspired design, everyday-wearable size, curly Koa face, sapphire crystal, 10ATM depth rating. The classic Pono look.

• Waterman (47mm) — Our newer, bolder flagship. Larger case, more presence on the wrist. Same premium material specs as the Surfrider — a statement piece for larger wrists or those who want the watch to lead the outfit.

• Castaway (45mm) — Sailing-inspired design with historical details. A size that has presence but doesn't overpower with its rounded shape. Same premium material specs as the Surfrider, for those that dream of adventure and blank horizons.

Different personalities, same premium parts and craftsmanship.

The Surfrider runs on a Japanese Miyota quartz movement 2115 — reliable, precise, and battery-powered. Miyota (owned by Citizen) is one of the world's most trusted quartz movement manufacturers. Expect roughly 2-3 years of battery life. Battery replacement can be done by any watchmaker or through our repair service. Our original designs are still in the wild 12 years later and working as intended.

We love high end watches.. Omega, Panerai.. they're beautiful and unique. While we don't have the in-house movements or the gigantic production facilities, we aim to use premium parts and processes to create a watch that can hold its own. Premium comes from the specifics: sapphire crystal (harder than mineral glass — only a diamond will scratch it), Japanese Miyota quartz movement (Citizen's trusted movement family, powers watches from luxury to fashion brands worldwide), 10ATM depth rating (rated for real water use, not just splash), and only curly-grade Hawaiian koa wood — less than 1% of available koa has this shimmering figure. All hand-finished in our shop in Honolulu, Hawaii. No factory line, no mass production. Every watch is checked individually before it ships. In fact, we produce only a few hundred a year — now that's rare and unique.

What makes it last: the stainless steel case, sapphire crystal, and Miyota movement are all engineered for decades of use with basic care. Our original watches from 12 years ago still pop up for servicing and are doing great. We build them to be handed down.