Seiko 5 Sports SRPM09
Green dial, 39.4 mm, 4R36 automatic.
- Japan: SBSA323
- 4R36
- 39.4 × 48.1 mm
- 100 m
- Hardlex
- $400
Specifications
- Movement
- Seiko 4R36, automatic with hand winding
- Accuracy
- +45 to -35 sec/day
- Case diameter
- 39.4 mm
- Lug-to-lug
- 48.1 mm
- Thickness
- 11.6 mm
- Lug width
- 20 mm
- Case
- Stainless steel
- Crystal
- Hardlex
- Water resistance
- 100 m
- Magnetic resistance
- 4,800 A/m
- Weight
- 146 g
- Band length (max)
- 210 mm
- Clasp
- Three-fold clasp with push button release
- Lume
- LumiBrite on hands and index(es)
- Dial
- Green
- Features
- LIMITED EDITION on the case back, See-through & Screw case back, Serial number engraved on the case back, Three-fold clasp with secure lock
- Released
- 2025-12
- Series
- Seiko 5 Sports, Field series
Other watches on the 4R36
Questions
What is the Japanese version of the Seiko SRPM09?
In Japan the SRPM09 is sold as the SBSA323: the same 4R36 calibre, the same 39.4 mm case and 100 m water resistance. Only the reference differs by market.
What movement is in the Seiko SRPM09?
The SRPM09 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 SRPM09 have a sapphire crystal?
No. The SRPM09 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 SRPM09?
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 SRPM09?
20 mm. Any 20 mm strap fits.