Seiko Cal. 5634 - 839

The 5634-839 is a sought-after Hand-Winding piece from Seiko's golden era. It features a Navy dial protected by a Acrylic crystal and offers 100m of water resistance. [seikata-wm-cb312915274f]

Also known as: Baby Tuna

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

40mm

Case Thickness

10.1mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

100m

Dial Color

Navy

Jewels

21j

Frequency

28,800 bph

Power Reserve

58 hours

Year

1973

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