Seiko Cal. 5691 - 570

The Seiko 5691-570 represents an important milestone in Seiko's 1991 lineup. The Bidirectional bezel and 36mm case give it a distinctive presence on the wrist. [seikata-wm-31b86322634b]

Also known as: Bellmatic, Baby Tuna

Specifications

Movement

Solar

Case Material

PVD Black

Case Width

36mm

Case Thickness

8.7mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

140m

Dial Color

Navy

Jewels

18j

Frequency

21,600 bph

Power Reserve

67 hours

Year

1991

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