Seiko Cal. 6140 - 237

Released in 1968, the Cal. 6140 with design code 237 was part of Seiko's domestic market collection. The Rotating bezel and 38mm case give it a distinctive presence on the wrist. [seikata-wm-8d3ec918ed7e]

Also known as: Sumo

Specifications

Movement

Hand-Winding

Case Material

Stainless Steel

Case Width

38mm

Case Thickness

12.9mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

90m

Dial Color

Cream

Jewels

24j

Frequency

28,800 bph

Power Reserve

62 hours

Year

1968

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