Seiko · Prospex
Marinemaster
Ref. SBDX017 — “MM300”
discontinuedUpdated MM300DocumentedLast reviewed Not yet reviewed
Reference photography not yet on file
Second-generation MM300, distinguished from the SBDX001 principally by the sapphire crystal and the coated case.
At a glance
- Brand
- Seiko
- Collection
- Prospex
- Reference
- SBDX017
- Production
- 2015–2020
- Caliber
- 8L35
- Case diameter
- 44.3mm
- Case material
- Stainless steel with super-hard coating
Related references
Reference family timeline
Every generation in this lineage in production order. Spans are as documented; an open end means the reference is current or its end year is not established.
- 2000–2015
- 2015–2020This reference