Seiko Cal. 4531 - 241

This Hand-Winding model from 1978 features a 39mm Stainless Steel case. Powered by the 4531 caliber with 23j jewels beating at 36,000 bph, it delivers a 50 hours power reserve. [seikata-wm-21f701a04025]

Also known as: Silverwave, Arnie

Specifications

Movement

Hand-Winding

Case Material

Stainless Steel

Case Width

39mm

Case Thickness

11.6mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

140m

Dial Color

Black

Jewels

23j

Frequency

36,000 bph

Power Reserve

50 hours

Year

1978

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