Seiko Cal. 6645 - 918

Released in 1967, the Cal. 6645 with design code 918 was part of Seiko's domestic market collection. It features a Green dial protected by a Hardlex crystal and offers 40m of water resistance. [seikata-wm-c73a4a2ee0ce]

Specifications

Movement

Quartz

Case Material

Gold-Plated

Case Width

46mm

Case Thickness

15.3mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

40m

Dial Color

Green

Jewels

29j

Frequency

36,000 bph

Power Reserve

61 hours

Year

1967

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