Seiko Cal. 5637 - 777

Seiko 5637-777

This Quartz model from 1969 features a 35mm Two-Tone case. Powered by the 5637 caliber with 34j jewels beating at 21,600 bph, it delivers a 64 hours power reserve. [seikata-wm-d6b387211b1b]

Also known as: Turtle, Tuna

Specifications

Movement
Quartz
Case Material
Two-Tone
Case Width
35mm
Case Thickness
15.2mm
Lug Width
18mm
Crystal
Sapphire
Bezel
Bidirectional
Water Resistance
180m
Dial Color
Cream
Jewels
34j
Frequency
21,600 bph
Power Reserve
64 hours
Year
1969

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