The Seiko 6159-700X is a strong follow-up to the 62MAS dive watch, released by the Japanese watchmaker three years later. The watch features a 43mm stainless steel case that is 14mm thick and comes with a comfortable black rugged strap. It is best suited for medium-to-large-sized wrists. The black ceramic bezel has gold indicators to show elapsed time. The matte black dial has geometric hour markers, broad sword hands, and a date window at 3 o'clock, all of which are outlined in gold, giving the watch a classic and timeless appearance that still influences Seiko's current divers series.
The screw-down crown at 4 o'clock ensures it doesn't dig into the wearer's skin. Built for professional diving, it has a water resistance rating of 300 meters and is powered by the in-house Seiko Caliber 6159, which beats at 36,000 vibrations per hour and has a 45-hour power reserve.
If you look closely at the dial, you'll notice that this example has the RESIST logo rather than PROOF. The first 6159-7001 were first produced with the WATERPROOF designation, however, ISO waterproof standards became stricter and because of that Seiko has decided to change it to RESIST in preparation for the application of the ISO standard. This particular 7001 is a "Transitional" RESIST variant that was cased in a PROOF case which makes it even rarer. This notation change also impacted other Seiko divers models such as the 6105-8000 and the 6105-8110.
This is a beautiful example that will be a great addition to any collection.
Ships from Tokyo, Japan.
Seiko Professional Diver 6159-7001
This diver is a stunning example in near-mint condition. The case remains strong, showing only light scratches and minor bumps from use. The dial is the true highlight—exceptionally clean, with hands that remain perfectly intact. The bezel is free from scratches or peeling and rotates smoothly.
The crystal is also in excellent shape, with no visible scratches.
The original GL721 straps are in remarkable condition and they're soft, showing almost no signs of wear. However, we recommend handling them with care to preserve their longevity.
BRAND: Seiko
MODEL: Professional Diver
REFERENCE: 6159-7001
DIAL: Original black dial
CASE MATERIAL: Stainless Steel
CASE DIMENSIONS: 50mm x 40mm Diameter, 14mm thickness, 22mm Lug Width
CRYSTAL: Mineral Crystal
CASE BACK: Screw-in Stainless Steel
MOVEMENT: Seiko Automatic Cal. 6159A
Manufacturing date: July 1969
Service History: Serviced in Jan 2025, ±2s/day
Bracelet/Strap: Original Seiko GL721 chocolate bar rubber straps