Seiko Cal. 5687 - 881

The Seiko 5687-881 represents an important milestone in Seiko's 1970 lineup. The Coin-Edge bezel and 39mm case give it a distinctive presence on the wrist. [seikata-wm-d9f7a9fe68ff]

Also known as: Baby Tuna

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

39mm

Case Thickness

15.5mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

140m

Dial Color

Cream

Jewels

19j

Frequency

28,800 bph

Power Reserve

49 hours

Year

1970

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