Prospex Sea GMT 42mm black dial diver's watch on stainless steel bracelet
Close up of Seiko Prospex Sea GMT 42mm on stainless steel bracelet with black dial rotating bezel
Seiko Prospex Sea GMT 42mm on a stainless steel bracelet with a green bezel and dark dial
Deployment clasp on a stainless steel bracelet for Seiko Prospex Sea GMT 42mm

Authorized Dealer. Seiko official 3 year warranty included

Seiko

HBC002 Prospex Sea GMT 42mm - Black on Bracelet

$1,800
Seiko
$1,800

HBC002 Prospex Sea GMT 42mm - Black on Bracelet

The Details

  • 42 mm

    Case Size

  • 13.3 mm

    Case Height

  • 48.6 mm

    Lug to Lug

  • 300m

    Water Resistance

Overview

Case Height

13.3 mm

Case Size

42 mm

Collection

Prospex

Style

Diver, GMT

Lug to Lug

48.6 mm

Lug Width

20 mm

Movement

Automatic

Reference

HBC002

Release Date

2026-04-20

Water Resistance

300m

Case

Bezel

Unidirectional roatating, stainless steel with black ceramic display and lume

Caseback

Screw

Case Material

Stainless steel

Clasp / Buckle

Three-fold clasp with secure lock & push button release, solid & slide adjuster. The new clasp can be adjusted in six steps, each measuring about 2.5mm, for a total range of approximately 15mm. It allows for a comfortable fit at all times, accommodating changes in wrist size during diving and daily life.

Crown

Screw-down

Crystal

Sapphire crystal with anti-reflective coating on inner surface

Dial Color

Black

Dial Features

Applied indexes and date window at 4:30

Lume

LumiBrite on hands, indexes and bezel

Strap / Bracelet Material

Stainelss steel bracelet

Movement

Accuracy

'+25 to -15 secs/day

Caliber

6R54

Features

Magnetic Resistance: 4,800 A/m

Functions

24-hour hand (dual time display function), stop second hand function

Jewels

24 Jewels

Movement

Automatic with manual winding

Power Reserve

72 Hours

Complication

24-Hour Time, Date

Why Buy From Teddy?

All watches ship free within the U.S.

Manufacturer's warranty on all orders

Trustpilot

About Seiko

One Step Ahead

Seiko was founded in 1881 in Tokyo, Japan and has grown to become one of the largest watch companies in the world. Today, Seiko’s diverse collection presents impressive value backed by some of the most iconic designs in watch history. Perhaps best known for its sporty Prospex collection, Seiko’s legend also stems from the attainable Seiko 5 Sports collection as well as the refined Presage range of well-finished dress watches.

Learn more
Seiko
Seiko
★★★★★ 7,000+ reviews

Your destination to learn watches, connect with enthusiasts, and buy your next watch.

4.9★
100K+
Watches Sold
85K+
Clients Served
50+
Authorized Brands