Seiko Cal. 5640 - 806

The Seiko 5640-806 represents an important milestone in Seiko's 1977 lineup. It features a Champagne dial protected by a Sapphire crystal and offers 60m of water resistance. [seikata-wm-ce9745bdbbec]

Also known as: Shogun, Sportsmatic

Specifications

Movement

Solar

Case Material

Stainless Steel

Case Width

35mm

Case Thickness

8.5mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

60m

Dial Color

Champagne

Jewels

25j

Frequency

36,000 bph

Power Reserve

53 hours

Year

1977

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