Seiko Cal. 5640 - 708

The Seiko 5640-708 represents an important milestone in Seiko's 1973 lineup. It features a White dial protected by a Sapphire crystal and offers 100m of water resistance. [seikata-wm-8657f120574e]

Also known as: Tuna

Specifications

Movement

Automatic

Case Material

Hardlex-Coated Steel

Case Width

42mm

Case Thickness

10.4mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

100m

Dial Color

White

Jewels

32j

Frequency

28,800 bph

Power Reserve

64 hours

Year

1973

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