Seiko Cal. 5643 - 637

The 5643-637 is a sought-after Kinetic piece from Seiko's golden era. The Coin-Edge bezel and 38mm case give it a distinctive presence on the wrist. [seikata-wm-216dfb1ae38c]

Also known as: Panda, Golden Tuna

Specifications

Movement

Kinetic

Case Material

Hardlex-Coated Steel

Case Width

38mm

Case Thickness

15.0mm

Lug Width

20mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

80m

Dial Color

Burgundy

Jewels

20j

Frequency

28,800 bph

Power Reserve

69 hours

Year

1970

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