SBDC221 [Limited 4000]

Main Features

SBDC221 is the Diver’s 1965 Heritage Save the Ocean Limited Edition from Seiko Prospex. Its key features include a Save the Ocean limited model concept, a dial inspired by the beautiful ocean of Okinawa, and a refined color combination.

Movement

Caliber: 6R55
Driving system: Mechanical, automatic with manual winding
Accuracy under normal usage: +25 to -15 seconds per day
Power reserve: Approximately 72 hours when fully wound
Jewels: 24
Function: Stop-seconds function

This model is powered by the mechanical automatic Caliber 6R55 and offers approximately 72 hours of power reserve.

Exterior and Size

Case: Stainless steel
Case coating: DiaShield
Crystal: Curved sapphire crystal
Crystal coating: Anti-reflective coating on inner surface
Lumibrite: Hands, indexes, and bezel
Case size: 13.0mm thickness, 40.0mm diameter, 46.4mm lug-to-lug

With its 40mm case, curved sapphire crystal, DiaShield coating, and Lumibrite, SBDC221 offers both practical diver’s watch performance and everyday wearability.

Water Resistance and Functions

Water resistance: Diver’s water resistance
Magnetic resistance: Yes
Clasp: Push-button diver adjuster clasp
Other features: Unidirectional rotating bezel, double-lock clasp, screw case back, screw-down crown, “LIMITED EDITION” marking on the case back, and serial number on the case back.

Okinawa Ocean Dial

The main appeal of this model is its blue dial inspired by the beautiful ocean of Okinawa, one of the world’s famous diving destinations. The radiant blue dial expresses sunlight shining onto the surface of the clear seawater and white sandy seabed.

Refined Color Combination

The fresh blue dial is paired with a low-gloss gray bezel, creating a sporty yet sophisticated look. This makes the watch easy to wear not only for diving, but also for daily casual styling.

Comfortable Diver Adjuster

The newly developed clasp allows the bracelet to be adjusted up to approximately 15mm in six steps of about 2.5mm each. This helps maintain comfort during diving and also in everyday situations where wrist size may change.

Recommended For

This model is easy to recommend for Seiko Prospex collectors, Save the Ocean fans, customers looking for a blue dial diver’s watch, people who love Okinawa or ocean-inspired design, and international customers who want a Japan-connected mechanical diver’s watch with limited-edition appeal.