Seiko Cal. 3871 - 634

The 3871-634 is a sought-after Spring Drive piece from Seiko's golden era. The Coin-Edge bezel and 41mm case give it a distinctive presence on the wrist. [seikata-wm-cab2ff70b3ee]

Also known as: Sea Horse, Golden Tuna

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

41mm

Case Thickness

14.1mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

50m

Dial Color

Navy

Jewels

22j

Frequency

36,000 bph

Power Reserve

69 hours

Year

1975

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