Specifications
- Movement
- Seiko 4R36, automatic with hand winding
- Case diameter
- 36.4 mm
- Lug-to-lug
- 44.4 mm
- Thickness
- 12.5 mm
- Lug width
- 18 mm
- Case
- Stainless steel
- Crystal
- Hardlex
- Water resistance
- 100 m
- Strap
- Calfskin
- Lume
- LumiBrite on hands and index(es)
- Features
- See-through & Screw case back
- Series
- Seiko 5 Sports, Field series
- Style
- Field Suits Style (2019 lineup)
Same case, other dials
Identical case, movement and dimensions; only the dial, bezel or finish differs.
Other watches on the 4R36
Questions
What movement is in the Seiko SRPJ89?
The SRPJ89 runs on the Seiko 4R36, an automatic movement that can also be wound by hand. See the 4R36 page for its specs and every watch built on it.
Does the Seiko SRPJ89 have a sapphire crystal?
No. The SRPJ89 has a Hardlex crystal. Hardlex is Seiko's hardened mineral glass: tougher than plain mineral glass, softer than sapphire.
How water resistant is the Seiko SRPJ89?
100 m (10 bar). That covers swimming and snorkelling; it is not a certified diver's watch unless Seiko says so.
What is the lug width of the Seiko SRPJ89?
18 mm. Any 18 mm strap fits.