Seiko Cal. 5686 - 437

The Seiko 5686-437 represents an important milestone in Seiko's 1971 lineup. Powered by the 5686 caliber with 34j jewels beating at 28,800 bph, it delivers a 40 hours power reserve. [seikata-wm-a5a1bf8f5fb2]

Also known as: Turtle

Specifications

Movement

Spring Drive

Case Material

Gold-Plated

Case Width

45mm

Case Thickness

10.2mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

120m

Dial Color

Navy

Jewels

34j

Frequency

28,800 bph

Power Reserve

40 hours

Year

1971

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