Seiko Cal. 5657 - 787

Released in 1986, the Cal. 5657 with design code 787 was part of Seiko's domestic market collection. Powered by the 5657 caliber with 29j jewels beating at 36,000 bph, it delivers a 60 hours power reserve. [seikata-wm-ac6be8ff3483]

Also known as: Golden Tuna

Specifications

Movement

Automatic

Case Material

Titanium

Case Width

38mm

Case Thickness

9.8mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

90m

Dial Color

Blue Sunburst

Jewels

29j

Frequency

36,000 bph

Power Reserve

60 hours

Year

1986

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