A robust and professional-grade diver’s watch, the Seiko Marinemaster 300 SLA021 combines iconic design with serious underwater capability—favored by enthusiasts for its monobloc case and in-house movement.
Details:
-
Reference: SLA021
-
Year: 2021
-
Case Size: 44.3mm, stainless steel (monobloc construction)
-
Bezel: Unidirectional rotating ceramic bezel
-
Dial: Glossy black with LumiBrite markers and hands
-
Movement: Seiko Caliber 8L35, automatic, 50-hour power reserve
-
Bracelet: Stainless steel bracelet with secure clasp and diver extension
Set Includes:
-
Original inner and outer boxes
-
Warranty card (dated 2021)
-
Instruction manual
-
Additional Seiko rubber dive strap
Condition:
-
Case in very good condition with minor signs of wear
-
Bezel and crystal clean and scratch-free
-
Bracelet shows visible surface wear and light scuffs from regular use
-
Running accurately, all functions operating perfectly
The SLA021 stands out in Seiko’s Prospex lineup with its high-end finishing, ceramic bezel, and the in-house 8L35 movement—offering the precision and durability expected from a true professional dive watch.
