Seiko 6R35
High confidenceThe caliber across the current mid-range Prospex and Presage lines. The reserve extension over the 6R15's roughly 50 hours is the practical difference between the two and is the quickest way to place a modern reference in its generation.
Specifications
- Movement manufacturer
- Seiko
- Production
- 2019–present
- Frequency
- 21,600 vph (3 Hz)
- Jewels
- 24
- Power reserve
- 70 hours
- Winding
- automatic
- Complications
- Date · Hacking seconds · Hand-winding
Architecture
Automatic caliber with a date, developed from the 6R15 with a longer mainspring barrel for an extended reserve.
Related calibers
Succeeded by
Seiko 6R15
References using this caliber
- Seiko SPB143Factory
Prospex · 2020 →
- Seiko SPB151Factory
Prospex · 2020 →
- Seiko SPB101Factory
Prospex · 2019 →
- Seiko SPB121Factory
Prospex · 2020 →
Provenance of this record
Sources & Evidence
Primary sourceManufacturer documentation
Seiko — Prospex, Presage, 5 Sports and Astron product documentation
Seiko Watch Corporation
- Accessed
- 2026-08-18
Cited for
This referenceHigh confidence
Last verified: Not yet reviewed