Seiko 5 Sports SRPK91
Ivory dial, 37.4 mm, 4R36 automatic.
- Japan: SBSA257
- 4R36
- 37.4 × 44.7 mm
- 100 m
- Hardlex
- $415
Specifications
- Movement
- Seiko 4R36, automatic with hand winding
- Accuracy
- +45 to -35 sec/day
- Case diameter
- 37.4 mm
- Lug-to-lug
- 44.7 mm
- Thickness
- 12.5 mm
- Lug width
- 18 mm
- Case
- Stainless steel
- Crystal
- Hardlex
- Water resistance
- 100 m
- Magnetic resistance
- 4,800 A/m
- Weight
- 125 g
- Band length (max)
- 205 mm
- Clasp
- Three-fold clasp with push button release
- Lume
- LumiBrite on hands and index(es)
- Dial
- Ivory
- Features
- See-through & Screw case back
- Released
- 2024-03
- Series
- Seiko 5 Sports, SNXS series
Same case, other dials
Identical case, movement and dimensions; only the dial, bezel or finish differs.
Other watches on the 4R36
Questions
What is the Japanese version of the Seiko SRPK91?
In Japan the SRPK91 is sold as the SBSA257: the same 4R36 calibre, the same 37.4 mm case and 100 m water resistance. Only the reference differs by market.
What movement is in the Seiko SRPK91?
The SRPK91 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 SRPK91 have a sapphire crystal?
No. The SRPK91 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 SRPK91?
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 SRPK91?
18 mm. Any 18 mm strap fits.