Seiko Cal. 6630 - 237

This Automatic model from 1981 features a 46mm Gold-Plated case. It features a Green dial protected by a Sapphire crystal and offers 110m of water resistance. [seikata-wm-c377e04838b0]

Also known as: Tuna, World Timer

Specifications

Movement

Automatic

Case Material

Gold-Plated

Case Width

46mm

Case Thickness

10.2mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

110m

Dial Color

Green

Jewels

32j

Frequency

28,800 bph

Power Reserve

51 hours

Year

1981

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