Seiko Cal. 5639 - 876

This Automatic model from 1971 features a 38mm PVD Black case. It features a Silver dial protected by a Mineral crystal and offers 90m of water resistance. [seikata-wm-880f89ee95c5]

Also known as: Helmet, Baby Tuna

Specifications

Movement

Automatic

Case Material

PVD Black

Case Width

38mm

Case Thickness

13.9mm

Lug Width

22mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

90m

Dial Color

Silver

Jewels

27j

Frequency

28,800 bph

Power Reserve

54 hours

Year

1971

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