Seiko Cal. 5630 - 228

Released in 1970, the Cal. 5630 with design code 228 was part of Seiko's domestic market collection. It features a Green dial protected by a Hardlex crystal and offers 170m of water resistance. [seikata-wm-21cf65003fd8]

Also known as: Sportsmatic, Golden Tuna

Specifications

Movement

Spring Drive

Case Material

Gold-Plated

Case Width

40mm

Case Thickness

9.5mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

170m

Dial Color

Green

Jewels

24j

Frequency

28,800 bph

Power Reserve

39 hours

Year

1970

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