Seiko Cal. 6137 - 431

The 6137-431 is a sought-after Spring Drive piece from Seiko's golden era. The Coin-Edge bezel and 46mm case give it a distinctive presence on the wrist. [seikata-wm-3af1fbdb37fc]

Also known as: Helmet, UFO

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

46mm

Case Thickness

9.2mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

200m

Dial Color

Navy

Jewels

24j

Frequency

36,000 bph

Power Reserve

50 hours

Year

1980

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