Seiko Cal. 5681 - 687

The Seiko 5681-687 represents an important milestone in Seiko's 1971 lineup. It features a White dial protected by a Sapphire crystal and offers 100m of water resistance. [seikata-wm-f0fca46144fe]

Also known as: Turtle, Baby Tuna

Specifications

Movement

Solar

Case Material

Two-Tone

Case Width

35mm

Case Thickness

9.8mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

100m

Dial Color

White

Jewels

34j

Frequency

36,000 bph

Power Reserve

44 hours

Year

1971

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