Seiko Cal. 6638 - 929

This Automatic model from 1967 features a 46mm Two-Tone case. It features a Green dial protected by a Mineral crystal and offers 170m of water resistance. [seikata-wm-7b45f24b5d4a]

Also known as: Bellmatic, Sea Horse

Specifications

Movement

Automatic

Case Material

Two-Tone

Case Width

46mm

Case Thickness

9.6mm

Lug Width

18mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

170m

Dial Color

Green

Jewels

23j

Frequency

28,800 bph

Power Reserve

57 hours

Year

1967

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