Seiko Cal. 5689 - 755

Seiko 5689-755

The Seiko 5689-755 represents an important milestone in Seiko's 1977 lineup. Powered by the 5689 caliber with 28j jewels beating at 21,600 bph, it delivers a 72 hours power reserve. [seikata-wm-6cfa3d13fc22]

Also known as: Sumo, Tuna

Specifications

Movement
Spring Drive
Case Material
Titanium
Case Width
35mm
Case Thickness
15.2mm
Lug Width
18mm
Crystal
Acrylic
Bezel
Fixed
Water Resistance
110m
Dial Color
Green
Jewels
28j
Frequency
21,600 bph
Power Reserve
72 hours
Year
1977

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