Seiko Prospex
SLA021 300m Diver

Product information

$3,100.00

 

Key Features

  • This timepiece features a 44mm steel case paired with a high quality steel bracelet. It showcases a distinctive black dial and is powered by a precise automatic winding movement. The watch is designed with a water resistance of up to 300m.
  • We are Authorized Dealers, ensuring you receive 3 Year warranty directly from Seiko Prospex.
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  • Multiple financing options. Learn more.
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Description

Seiko Prospex Marine Master 300m SLA021 Watch Review

The Seiko professional diver SLA021 watch comes with a stainless steel bracelet. The 021 has exceptional capability and is substantial. It is 44.3mm in diameter and 15.3mm thick. It is 50.2mm lug to lug, but if you include the solid end links of the bracelet then it is 52.8mm across the wrist with a highly orthodox and versatile 20mm spacing between the lugs. This watch is more substantial than standard Seiko divers. It is best suited for a wrist of 15cm circumference or larger, but a smaller wrist could wear this watch comfortably.

The Hardware

This timepiece has a steel bracelet with a staggered link alignment and finish, satin primaries, polished out faces, and polished intermediates. There are pins and sleeves used for sizing the bracelet that are removable, so there is quite a bit of built-in room for adjustments. The clasp also has four drilled divots, so you can use your strap tool to change the anchoring point to the bracelet inside the clasp.

When you lift up the extension system, it allows you to incrementally extend the dive fold outward. If it's on your wrist and you're underwater it is just as easy to manipulate. It can fold out over a dive suit with its trigger release system; alternatively there is also a clamshell lick.

There are two strap holes in the flanks of the lugs on the case. The case is a monoblock, which means everything loads through the front. There is no discrete removable case back. This watch is so hermetically sealed that even helium can't get in, so this watch is suitable for saturation divers.

The case band has polished elements that are black and mirrored. The bezel is chunky and deeply knurled with a beautiful combination of silky refinement and mechanical detente. It has a ceramic bezel insert, and you will notice in the loom shot that the bezel is luminous from the index through 20 minutes. The dial features applique indices and lovely satin finished hands. All three hands loom like they should on any dive watch. The crystal in this watch is sapphire, and the crown is a screw-down 300.

The Movement

The movement is 8L35b, which is a Grand Seiko movement with a lower level of exterior finish and adjustment. It has a 50 hour automatic winding power reserve and a stop-seconds function, so you can set it precisely. It has a quick set date and 26 jewels.

The Seiko Prospex Diver Professional SLA021 has a DiaShield outer hard coating on its Zaratsu polished surface wallet. It is a handsome execution, and it is also very tough. The watch is substantial and durable and is a watch you will want to wear all the time.

Gender

Men's

Warranty

3 Year

GTIN

029665195432

Reference Number

SLA021

Condition

New

Material

Stainless Steel

Caseback

Solid

Case Diameter ⌀

44.3mm

Thickness

15.4mm

Glass

Sapphire Crystal

Crown

Screw-down

Water Resistance

300m

Shape

Round

Color

Black

Dial Markers

Indexes

Hands

Luminous

Functions

Hours, Minutes, Seconds, Date, Rotating Bezel

Movement Type

Automatic

Movement Description

Mechanical Automatic, Caliber 8L35, Accuracy: +15 to -10 seconds per day, Approx. 50 hours power reserve.

Type

Steel bracelet

Material

Stainless Steel

Buckle Type

Three-fold Clasp With Secure Lock

Frequently Asked Questions

Common Questions Answered

We are specialists with over 25 years in the watch industry. We are authorized dealers of more than 60 watch brands and have a 4.9 out of 5-star rating on Google Reviews with over +2,000 reviews. Customer satisfaction is our top priority.

We are located in Naples, Florida, but we ship to customers all over the United States and around the world, with some exceptions.

Yes, we offer free US shipping on orders over $1,000.

  • US Shipping: FedEx 2-Day Delivery. Optional: FedEx Overnight Shipping with additional charges.

Unfortunately, we are unable to ship this watch outside the United States.

Yes, All our shipments are fully insured during transit until it is delivered to you.

Yes, this watch comes with a 3 Year warranty directly from Seiko Prospex.

Absolutely! We accept trade-ins for used watches. Contact us for more details on how to trade in your watch.

We charge taxes only for sales in Florida.

We accept Wire Transfers, Credit Cards, Bitcoin, PayPal, Apple Pay, and Google Pay.

Yes, we offer PayPal Credit, Affirm, and Jewelers Reserve as credit methods. Read more here.

We have a 7-day return policy. Read our full return policy here.

Yes, we offer repair and servicing for a wide range of watch brands. Our expert technicians ensure your timepieces are well-maintained and in perfect working condition.

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