Seiko Cal. 5640 - 562

Released in 1966, the Cal. 5640 with design code 562 was part of Seiko's domestic market collection. The Coin-Edge bezel and 36mm case give it a distinctive presence on the wrist. [seikata-wm-ff8ea9bd4b1d]

Also known as: Sea Horse, Arnie

Specifications

Movement

Automatic

Case Material

Hardlex-Coated Steel

Case Width

36mm

Case Thickness

13.3mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

50m

Dial Color

Blue Sunburst

Jewels

29j

Frequency

36,000 bph

Power Reserve

71 hours

Year

1966

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