Seiko Prospex Marinemaster 300M - 1968 Heritage JDM Salon Exclusive

Ref. SBDX065
Status: Sold out
1-Year Warranty
Share:
Condition

New/Mint

Year

2024

Set

with Box and Papers

Movement Type

Automatic

Caliber

Seiko cal. 8L35

Case Material

Steel

Case Size

42.6mm

Power Reserve

50h

Water Resistance

30 ATM

Dial Color

Black

Complications & Functions

Date
Central seconds
Luminous hands
Rotating Bezel
Screw-Down Crown
Luminous indices
Special Edition

Description

Meet the Seiko Prospex Marine Master 300M, a true icon in the world of professional dive watches. This isn't just any diver; it carries the heritage of Seiko's deep-sea exploration tools. Water resistant to 300 meters (enough for finding Nemo, probably), it's built incredibly tough. The standout feature is its one-piece 'Monobloc' stainless steel case. This clever design eliminates the need for a separate case back, enhancing water resistance and making it suitable for saturation diving without needing a helium escape valve – neat trick, Seiko! Powering this legend is the high-grade Seiko Calibre 8L35 automatic movement, known for its robustness and precision, essentially an undecorated Grand Seiko calibre assembled by master watchmakers. The deep black dial provides a perfect stage for the distinctive hands and applied hour markers and the excellent Seiko LumiBrite ensures visibility when the lights go out. The unidirectional rotating bezel features a durable black insert for timing dives. Seiko's renowned finishing is evident, often including sharp lines and potentially Zaratsu polishing on certain surfaces. Fitted with a robust steel bracelet, this Marine Master 300M combines legendary performance with unique aesthetics. Our offering is brand new and comes in full set of boxes and papers. Covered by our limited warranty of 1 year, starting on the date of purchase & manufacturers own warranty started in 10.2024.

This watch has been sold

Sign up to be notified when we have similar watches available or join our newsletter for exclusive updates.

Why Choose ChronoTimepieces

Authenticity Guaranteed

Every timepiece is thoroughly authenticated by our experts

Secure Worldwide Shipping

Fully insured international shipping to your door

1-Year Warranty

Comprehensive coverage for peace of mind

Expert Support

Dedicated team of watch experts at your service