Seiko Cal. 6645 - 263

This Spring Drive model from 1975 features a 45mm Two-Tone case. It features a Silver dial protected by a Hardlex crystal and offers 140m of water resistance. [seikata-wm-1fb811aa9bde]

Also known as: Sea Horse, Golden Tuna

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

45mm

Case Thickness

13.2mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

140m

Dial Color

Silver

Jewels

34j

Frequency

36,000 bph

Power Reserve

65 hours

Year

1975

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