This Seiko Prospex SLA021 boasts a beautiful ceramic bezel, excellent zaratsu polishing, and a sapphire crystal with anti-reflective coating. The watch has not required service since I have owned it.

• Condition: Excellent used condition with minor scuffs and hairlines
• Dial Color: Black
• Crystal Type: Sapphire crystal with anti-reflective coating
• Bracelet Material: Stainless Steel

The watch features a ceramic bezel and zaratsu polishing, with a black dial and sapphire crystal.

• Condition: Excellent used condition
• Dial color: Black
• Crystal type: Sapphire with anti-reflective coating
• Bracelet material: Stainless Steel

This watch is an absolute tank, boasting a beautiful ceramic bezel and excellent zaratsu polishing. The watch has not required service since I have owned it.

• Condition: Excellent used condition
• Bracelet material: Stainless Steel
• Crystal type: Sapphire crystal with anti-reflective coating
• Case size: 44.3mm diameter

This Seiko SLA021 MM300 is a discontinued model, sold as new with full kit and warranty dated 4/2025.

• Condition: New in Box (BNIB)
• Status: discontinued

This Seiko Prospex Marine Master 300M is a high-quality dive watch with excellent condition. It comes with its original box, an unused rubber strap, and a booklet. The ceramic bezel is perfect, but there's a small ding on the edge near the 7 marker.

• Condition: Excellent
• Bracelet material: Metal
• Water resistance depth rating: 300m

Selling a Seiko SLA021 MM300, full kit included with warranty dated 4/2025.

• Condition: New in box
• Warranty expiration date: 4/25

This Seiko SLA021 MM300 is a 40mm explorer-style watch that I've owned for over a year. It's in excellent condition with only minor signs of wear on the clasp and links. The watch comes with its original packaging, including the inner and outer box, unused strap, spare links, and warranty booklet.

• Condition: Near mint, lightly worn
• Size: 40mm diameter
• Depth rating: unknown
• Warranty remaining: nearly two full years

This Seiko Marine Master 300 SLA 021 is a high-end automatic diver's watch featuring a stainless steel case with super-hard coating, sapphire crystal, and black dial. It has a thickness of 15.4mm, diameter of 44.3mm, and length of 50.5mm.

• Condition: Near mint condition
• Case Thickness: 15.4mm
• Diameter: 44.3mm
• Length: 50.5mm

• Bracelet: OEM
• Strap: rubber, Angus Jubilee strapcode