Watch Catalog

Seiko 5 Sports SRPK29

Black dial, 38.0 mm, 4R36 automatic.

  • Japan: SBSA225
  • 4R36
  • 38.0 × 44.2 mm
  • 100 m
  • Hardlex
  • $350
38.0 mm44.2 mm20 mm12.1 mmside
Case drawn to scale from Seiko's published dimensions: top view with lugs, and side view.

Specifications

Movement
Seiko 4R36, automatic with hand winding
Accuracy
+45 to -35 sec/day
Case diameter
38.0 mm
Lug-to-lug
44.2 mm
Thickness
12.1 mm
Lug width
20 mm
Case
Stainless steel
Crystal
Hardlex
Water resistance
100 m
Magnetic resistance
4,800 A/m
Weight
140 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
2023-03
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

Every 4R36 watch

Questions

What is the Japanese version of the Seiko SRPK29?

In Japan the SRPK29 is sold as the SBSA225: the same 4R36 calibre, the same 38.0 mm case and 100 m water resistance. Only the reference differs by market.

What movement is in the Seiko SRPK29?

The SRPK29 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 SRPK29 have a sapphire crystal?

No. The SRPK29 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 SRPK29?

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 SRPK29?

20 mm. Any 20 mm strap fits.