Seiko Cal. 6320 - 638

The Seiko 6320-638 represents an important milestone in Seiko's 1965 lineup. It features a Navy dial protected by a Mineral crystal and offers 100m of water resistance. [seikata-wm-c66f683ee7aa]

Specifications

Movement

Quartz

Case Material

Gold-Plated

Case Width

46mm

Case Thickness

13.9mm

Lug Width

20mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

100m

Dial Color

Navy

Jewels

20j

Frequency

28,800 bph

Power Reserve

63 hours

Year

1965

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