Seiko Cal. 5657 - 120

The Seiko 5657-120 represents an important milestone in Seiko's 1985 lineup. Powered by the 5657 caliber with 32j jewels beating at 28,800 bph, it delivers a 56 hours power reserve. [seikata-wm-7a9bf4ee4f2e]

Also known as: Baby Tuna

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

36mm

Case Thickness

13.4mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

160m

Dial Color

Navy

Jewels

32j

Frequency

28,800 bph

Power Reserve

56 hours

Year

1985

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