Seiko Cal. 7144 - 637

The Seiko 7144-637 represents an important milestone in Seiko's 1965 lineup. It features a Blue Sunburst dial protected by a Hardlex crystal and offers 120m of water resistance. [seikata-wm-feef9e6f7708]

Also known as: Sumo

Specifications

Movement

Solar

Case Material

PVD Black

Case Width

46mm

Case Thickness

14.3mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

120m

Dial Color

Blue Sunburst

Jewels

27j

Frequency

28,800 bph

Power Reserve

39 hours

Year

1965

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