Seiko Cal. 5657 - 978

The Seiko 5657-978 represents an important milestone in Seiko's 1981 lineup. Powered by the 5657 caliber with 24j jewels beating at 36,000 bph, it delivers a 36 hours power reserve. [seikata-wm-f2aea08cd899]

Also known as: Turtle

Specifications

Movement

Kinetic

Case Material

Two-Tone

Case Width

36mm

Case Thickness

11.2mm

Lug Width

18mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

110m

Dial Color

Silver

Jewels

24j

Frequency

36,000 bph

Power Reserve

36 hours

Year

1981

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