Seiko Cal. 6644 - 757

Seiko 6644-757

This Automatic model from 1978 features a 38mm Titanium case. Powered by the 6644 caliber with 25j jewels beating at 28,800 bph, it delivers a 61 hours power reserve. [seikata-wm-9f19bfe08e85]

Specifications

Movement
Automatic
Case Material
Titanium
Case Width
38mm
Case Thickness
11.1mm
Lug Width
18mm
Crystal
Acrylic
Bezel
Inner Rotating
Water Resistance
50m
Dial Color
Navy
Jewels
25j
Frequency
28,800 bph
Power Reserve
61 hours
Year
1978

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seikata-wm-9f19bfe08e85