Seiko Cal. 6638 - 181

Seiko 6638-181

This Kinetic model from 1975 features a 46mm Titanium case. Powered by the 6638 caliber with 18j jewels beating at 36,000 bph, it delivers a 38 hours power reserve. [seikata-wm-82a3cbe80340]

Specifications

Movement
Kinetic
Case Material
Titanium
Case Width
46mm
Case Thickness
10.4mm
Lug Width
22mm
Crystal
Sapphire
Bezel
Rotating
Water Resistance
120m
Dial Color
Silver
Jewels
18j
Frequency
36,000 bph
Power Reserve
38 hours
Year
1975

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seikata-wm-82a3cbe80340