Seiko 5 Sports SRPK99
Black dial, 42.5 mm, 4R36 automatic.
- Japan: SBSA261
- 4R36
- 42.5 × 46.0 mm
- 100 m
- Hardlex
- $400
Specifications
- Movement
- Seiko 4R36, automatic with hand winding
- Accuracy
- +45 to -35 sec/day
- Case diameter
- 42.5 mm
- Lug-to-lug
- 46.0 mm
- Thickness
- 14.2 mm
- Lug width
- 22 mm
- Case
- Stainless steel
- Crystal
- Hardlex
- Water resistance
- 100 m
- Magnetic resistance
- 4,800 A/m
- Weight
- 169 g
- Band length (max)
- 205 mm
- Clasp
- Three-fold clasp with push button release
- Lume
- LumiBrite on hands and index(es)
- Dial
- Black
- Features
- See-through & Screw case back, Three-fold clasp with secure lock, Unidirectional rotating bezel
- Released
- 2024-04
- Series
- Seiko 5 Sports, SKX 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 SRPK99?
In Japan the SRPK99 is sold as the SBSA261: the same 4R36 calibre, the same 42.5 mm case and 100 m water resistance. Only the reference differs by market.
What movement is in the Seiko SRPK99?
The SRPK99 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 SRPK99 have a sapphire crystal?
No. The SRPK99 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 SRPK99?
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 SRPK99?
22 mm. Any 22 mm strap fits.