Seiko Cal. 5616 - 640

Seiko 5616-640

This Automatic model from 1979 features a 35mm Two-Tone case. The Inner Rotating bezel and 35mm case give it a distinctive presence on the wrist. [seikata-wm-033cd53134f9]

Also known as: Sumo, Sportsmatic

Specifications

Movement
Automatic
Case Material
Two-Tone
Case Width
35mm
Case Thickness
15.2mm
Lug Width
19mm
Crystal
Hardlex
Bezel
Inner Rotating
Water Resistance
80m
Dial Color
Silver
Jewels
36j
Frequency
36,000 bph
Power Reserve
65 hours
Year
1979

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seikata-wm-033cd53134f9