Seiko Cal. 5644 - 678

Seiko 5644-678

This Kinetic model from 1966 features a 35mm Two-Tone case. Powered by the 5644 caliber with 35j jewels beating at 21,600 bph, it delivers a 57 hours power reserve. [seikata-wm-b47d531a26c9]

Also known as: Turtle, World Timer

Specifications

Movement
Kinetic
Case Material
Two-Tone
Case Width
35mm
Case Thickness
9.0mm
Lug Width
18mm
Crystal
Mineral
Bezel
Coin-Edge
Water Resistance
120m
Dial Color
Black
Jewels
35j
Frequency
21,600 bph
Power Reserve
57 hours
Year
1966

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