Seiko Cal. 4561 - 138

This Spring Drive model from 1986 features a 39mm Hardlex-Coated Steel case. Powered by the 4561 caliber with 25j jewels beating at 21,600 bph, it delivers a 56 hours power reserve. [seikata-wm-345e5bb11cfe]

Also known as: Turtle, Bullhead

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

39mm

Case Thickness

13.3mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

50m

Dial Color

White

Jewels

25j

Frequency

21,600 bph

Power Reserve

56 hours

Year

1986

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