This is an excellent and highly collectible example of the modern MarineMaster 300, featuring a Zaratsu-polished case, sapphire crystal, and in-house 8L35 movement. The deep blue dial is luminous and changes character in any light.

• Condition: Excellent with light scratches on case and very minimal on bracelet
• Case size: 44mm
• Lug to lug length: 50mm
• Thickness: 15mm

This listing is for a Seiko SLA023 “Marinemaster 300” which is a full kit.

This is an iconic Seiko Prospex MM300, a highly collectible example of the modern MarineMaster 300. It features a Zaratsu-polished case, sapphire crystal, and in-house 8L35 movement running at +3s/day. The deep blue dial is luminous and changes character in any light.

• Condition: Excellent, with some light scratches on case and minimal on bracelet
• Case size: 44mm
• Water resistance: 300m
• Movement: in-house 8L35 (GS base)

The Seiko Prospex MM300 features a Zaratsu-polished case, sapphire crystal, 300m water resistance, and the in-house 8L35 movement. The dial is a deep blue that shifts beautifully in different light, paired with sharp hands and markers that glow brightly.

• Condition: Great condition with some light scratches on case and very minimal on bracelet
• Case size: 44mm
• Lug to lug: 50mm
• Thickness: 15mm

This Seiko MarineMaster 300, reference SLA023, features a Zaratsu polishing finish and is equipped with an OEM bracelet and Crafter Blue Rubber strap. It has minor hairline scratches but is otherwise in great condition.

• Condition: great condition, hairline scratches on case and bracelet
• Bracelet length: 6.75"
• Case diameter: not specified
• Water resistance: 300m

Seiko SLA023 MarineMaster 300, a basically brand new watch from the AD with full warranty.

• Condition: Brand new, perfect shape
• Purchase date: 8/15
• Warranty period: 3 years