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Seiko Prospex PADI Automatic Dive Watch - SRPA21K Turtle

$699.00  $499.00
Save: $200.00 (29%)

  • Model: SEIKO-SRPA21K *DISC
  • Brand: Seiko
  • EAN: 4954628204905

Product Description

The Seiko Prospex PADI Automatic Diver's Watch, SRPA21K Turtle, with Stainless Steel bracelet, has a 45 mm cushion-style stainless steel case with a hardlex crystal. The case has a magnetic resistance of 4,800 A/m. It features a Seiko 24 jewel automatic (4R36) movement with a 41 hour power reserve fully wound. A day and date display is at 3:00, and you get highly luminous hands and markers treated with Lumibrite for awesome low light visibility. This is a timepiece that guides you through the challenges of the deep blue.

Are you looking for a new watch, a watch that you could easily wear during summer, weekends, holidays, to the beach, to the pool, while scuba diving, freediving, spearfishing or snorkelling, for all kind of leisure activities, with a solid construction, a robust water resistance, a rather cool look, slightly vintage-inspired, from a reputable manufacturer? You can have all of that, with the Seiko Prospex PADI SRPA21 Turtle Automatic Diver's Watch.

The Seiko Prospex PADI SRPA21K Turtle is cool because it's a vintage reissue. This watch is a blast from the past. Seiko has introduced a vintage-oriented model that is reminiscent of an iconic vintage Seiko diver's watch, the 63XX series, a.k.a the Seiko Turtle. The 63XX series was launched in 1977 and it was true to what made Seiko dive watches so popular: it was cheap, super reliable, precise and tested for professional use. The main ingredient of the success of these watches today is the shape of the case, that collectors call a 'turtle'.

What gives the Turtle its nickname is the uniquely rounded cushion case shape that resembles a turtle's shell. With the Seiko Prospex PADI SRP21K, the 'turtle' shape is back in all of its glory, with the crown at 4, with the thin flanks, with the circular brushed pattern... everything is here. It's an incredibly comfortable watch to wear and the curved case edges sit nicely against your wrist when bending or moving your hand.

Measuring in at 45 mm wide, the case is still relatively thin at 13.4 mm. The lug to lug measurement is only 48 mm and the lug width is 22 mm. This all adds to the comfort and wearability of both women and men. This diver's watch lets you enjoy the beauty of the past, with the safety and quality of the 21st century.

On the case back you'll find the Seiko tsunami logo and a nice little reminder that you have a Special Edition. The bezel is also polished and is easy to grip and turn the full 120 clicks.

Squeezed within the bezel is Seiko's proprietary Hardlex crystal which is scratch resistant and much more resistant to shattering — which could potentially save the watch if you were diving and had a bad knock against the crystal.

Then there is the dial, which also pays tribute to the old 6309. The Seiko Prospex PADI SRPA21 has the exact same layout, same indexes, same hands (almost), same day and date display. It's a copy of the past, but with modern quality. The indexes are precisely crafted and affixed, the hands also have a great aspect and the overall dial inspires.

The Seiko Prospex PADI SRPA21 Turtle looks like a vintage edition. But this special edition is made by Seiko in partnership with PADI, the world's most trusted scuba diving training organisation. Seiko uses the SRP779 watch as a base, meaning that it features the iconic Pepsi bezel. However, the PADI watch adds a very nice looking blue dial, with sun-ray pattern, replacing the matte black dial of the normal edition. As well as its good looks, the colour choice is a clear connection to the blue and red of the PADI logo.

In addition to the new colour, the PADI logo is printed at 6. The large arrow minute hand is now painted in red, again a specific feature of this Seiko Prospex PADI SRPA21.

If you want to read the watch in the dark of night or depths of the ocean, the hour and minute hands are wide and flat and coated with a generous amount of Seiko’s legendary Lumibrite lume. The Lumibrite is also not in short supply on the large and deep circle and candle shaped raised indices dotted around the dial and when charged it glows like radioactive waste all night long.

The Seiko Prospex PADI SRPA21K features a stainless steel bracelet which has a stamped three fold clasp with secure flip lock and extender. It has 4 micro-adjustments and is easy to size comfortably to your wrist. The entire bracelet is solid including the end links. The added drilled lug holes make changing straps and bracelets easy and by doing so you can change the look completely and make it feel like an entirely new watch.

The case is precisely crafted and adjusted, the bezel feels solid and durable, the bracelet is solid and well manufactured and the details of the dial and the hands are superb.

Inside the Seiko Prospex PADI SRPA21K ticks like a workhorse, but using one of the new generation of Seiko movements. This wrist watch has the new iteration calibre 4R36 ticking inside. It is a self-winding calibre with manual-winding capacity and hacking-seconds features, beating at 21,600 vph, having 24 jewels and a power reserve of approximately 40 hours. This Seiko movement is both extremely reliable and precise.

The Seiko Prospex PADI SRPA21 Turtle is cool because it's a Prospex. In the Seiko world of watches Prospex simply means 'Professional Specifications'. It's Seiko's answer to the professional world that desires nothing but the very best from their watches.This diver's watch has the famous 'X' Prospex logo printed on its dial. Seiko Prospex watches are sturdy, rugged, reliable and designed for being used in professional conditions.

The Seiko Prospex PADI SRPA21 Turtle has a comfortable 200 metre water resistance, the required legibility of a proper dive watch — large hands and indexes, highly legible in day-time (good contrast) and in night-time (good lume), with no possible confusion between the indexes (the index at 12 is highly different) and highly differentiated hands (no confusion between the minute and the hour hands possible) — a unidirectional bezel, with 60-minute scale and 20-minute area highlighted in red.

Many watches bear the label diver's watch but only a small number of these timepieces can be considered fully functional in professional environments. Seiko helped to establish the standard for diver's watches in the International Organisation for Standardisation (ISO). This watch fulfills the ISO 6425 standards for dive watches. If you are an avid diver, this watch is your perfect companion. This Seiko Prospex PADI SRPA21K reunites the best of affordable Seiko dive watches with the quality of the Seiko Prospex collection.

A great thing about any Seiko watch is that you can make claim to having a fully in-house made movement and watch. Seiko produce everything themselves which is a feat not many other manufactures can boast.

The Seiko Prospex PADI SRPA21 Turtle is a bargain. When you look at what this diver's watch really is, you have to realise this is a great deal. The concept of a dive watch, with water resistance over 200m, with a modern accurate movement, with professional specifications, from a manufacture with such a great pedigree. What you'll have is just one of the coolest dive watches possible, with a package that will make you feel you paid a lot more. Not just a diver's watch, this is a perfect summer watch for everyone, avid collectors, new comers, rich or not.

Seiko Prospex PADI Automatic Diver's Watch SRPA21K Turtle Features

  • Special Edition PADI diver's watch with enhanced Pepsi colour scheme
  • 45 mm wide Turtle case size suitable for wearing by both men and women
  • Water resistance: 200m Diver
    The watch is designed and manufactured to withstand up to 200 metres going under the water, and is suitable for wearing while scuba diving.
  • Screw-down crown at the 4 o'clock position< br/> Greater security is achieved by positioning the screw-lock crown at the 4 o'clock position.
  • High legibility
    The dial design has just one objective; maximum legibility, even deep in the ocean where sunlight does not penetrate. The hour markers are large, so as to allow the maximum surface area and depth for Seiko's Lumibrite coating.
  • Screw-down crown and buttons
    The crown and power reserve buttons have screw-down protection to prevent any accidental operation.
  • Unidirectional rotating bezel
    The precise and secure operation of the uni-directional bezel prevent accidental rotation, so that the time measured is never shorter than the actual elapsed time.

Seiko Prospex PADI Automatic Diver's Watch SRPA21K Turtle Specifications

  • Model - SRPA21K
  • Calibre No. - 4R36
  • Power Reserve/Battery Life - 41 Hours Power Reserve
  • Battery Type - N/A

Calibre Specifications

  • Calibre Function: - Analogue - 3 Hands
  • Calibre Accuracy - +45 -35 seconds a DAY (at normal temperature range (5°C and 35°C)
  • Calibre Display - Analogue
  • Powered By The Movement Of The Wearer

Case Specifications

  • Water Resistance - Diver's 200 metres
  • Case Material - Stainless Steel
  • Case Size - 45 mm
  • Case colour - Silver
  • Band/Bracelet Type - Bracelet - Stainless Steel
  • Band/Bracelet colour - Silver
  • Band Reference - M0EV631J0
  • Glass Type - Hardlex
  • Crown Type - Screw-Down
  • Rotationg Bezel - One-Way

Layout Specifications

  • Dial Colour - Blue
  • Hand Indicators - Hour, Minute, Seconds
  • Calendar Indicators - Date, Day Of The Week
  • Lumibrite - Hands and Markers
  • Dial Markers - Batons


  • Special Edition PADI Special Boxing
  • Complete with 3 Year Australian Warranty
  • Made in Japan

Seiko Authorised Dealer

Seiko Authorised Dealer SiteThe Scuba Doctor dive shop is a Seiko Authorised Dealer. All of the Seiko Prospex Diver's Watches we sell come complete with a Seiko 3 Year Australian Warranty. Some non-authorised sites sell counterfeit or second-hand watches, or watches that have been tampered with, and are, therefore, not eligible for care under the Seiko warranty. Others do not offer the original Seiko international warranty, nor do they offer any after-sales service of any kind. Please take advantage of the peace-of-mind that we can offer to you on Seiko purchasers.

(12/17 LRB)