Seiko Cal. 6140 - 715

Released in 1978, the Cal. 6140 with design code 715 was part of Seiko's domestic market collection. The Rotating bezel and 34mm case give it a distinctive presence on the wrist. [seikata-wm-445ab45ec65e]

Also known as: Helmet, Golden Tuna

Specifications

Movement

Spring Drive

Case Material

Gold-Plated

Case Width

34mm

Case Thickness

12.1mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

190m

Dial Color

Navy

Jewels

26j

Frequency

28,800 bph

Power Reserve

69 hours

Year

1978

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