The Seiko 5 Sports HDB005K1 features a 42.5 mm stainless steel case paired with a matching silver-tone stainless steel bracelet and a striking green dial. Driven by the 4R36 automatic movement with manual winding capability, it provides a 41-hour power reserve alongside a practical day-date display.

Built for durability and everyday utility, the watch includes a unidirectional rotating bezel, LumiBrite hands and markers, and a curved Hardlex crystal. A transparent screw-down exhibition caseback displays the inner mechanism, while 100-metre water resistance ensures reliable performance.

Key Features

Brand	Seiko
Collection	Seiko 5 Sports
Series	SKX
Model	HDB005K1
Gender	Men's
Movement	Automatic with manual winding
Calibre	4R36
Jewels	24
Power Reserve	Approximately 41 hours
Functions	Hours, minutes, seconds, day and date
Stop-Seconds Function	Yes
Dial Colour	Green
Case Material	Stainless steel
Case Colour	Silver-tone
Case Diameter	42.5 mm
Case Thickness	14.2 mm
Lug-to-Lug	46 mm
Case Shape	Round
Bezel	Unidirectional rotating bezel
Crystal	Curved Hardlex
Luminous Features	LumiBrite on hands and indices
Bracelet Material	Stainless steel
Bracelet Colour	Silver-tone
Lug Width	22 mm
Clasp	Three-fold clasp with push-button release and secure lock
Caseback	Transparent screw-down exhibition caseback
Water Resistance	10 bar / 100 metres
Magnetic Resistance	4,800 A/m
Weight	169 g

Highlights

Seiko 4R36 automatic movement with manual winding and 41-hour power reserve
Durable 42.5 mm stainless steel case and matching three-fold clasp bracelet
Distinctive green dial with LumiBrite luminous hands and markers
Unidirectional rotating bezel and curved Hardlex crystal
10 bar (100 m) water resistance and transparent exhibition caseback

Frequently asked questions

What movement powers the Seiko 5 Sports HDB005K1?

It is powered by the Seiko calibre 4R36 automatic movement with manual winding capability.

What is the power reserve of this timepiece?

The watch offers a power reserve of approximately 41 hours.

What is the case diameter and thickness?

The stainless steel case measures 42.5 mm in diameter, 14.2 mm in thickness, and 46 mm lug-to-lug.

What type of crystal is fitted on the watch?

The watch is equipped with a curved Hardlex crystal.

What is the water resistance rating?

It features a water resistance rating of 10 bar (100 metres).

Does the watch feature luminescence for low-light reading?

Yes, the hands and indices are coated with LumiBrite for enhanced visibility in low light.

Seiko 5 Sports SKX Green Dial Automatic Men's Watch