Seiko · Prospex
Sumo
Ref. SPB101
currentSapphire 6R35 SumoDocumentedLast reviewed Not yet reviewed
Reference photography not yet on file
Updated Sumo with a sapphire crystal and the longer-reserve 6R35.
At a glance
- Brand
- Seiko
- Collection
- Prospex
- Reference
- SPB101
- Production
- 2019–present
- Caliber
- 6R35
- Case diameter
- 45mm
- Case material
- Stainless steel
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.