Seiko Cal. 3815 - 581

This Hand-Winding model from 1992 features a 45mm Hardlex-Coated Steel case. Powered by the 3815 caliber with 25j jewels beating at 28,800 bph, it delivers a 66 hours power reserve. [seikata-wm-b1f7a16a723f]

Also known as: Sportsmatic

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

45mm

Case Thickness

8.7mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

30m

Dial Color

Burgundy

Jewels

25j

Frequency

28,800 bph

Power Reserve

66 hours

Year

1992

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