Seiko Cal. 4538 - 636

Seiko 4538-636

This Hand-Winding model from 1971 features a 34mm Titanium case. Powered by the 4538 caliber with 35j jewels beating at 21,600 bph, it delivers a 54 hours power reserve. [seikata-wm-9b0a0922afd4]

Also known as: Goldfeather

Specifications

Movement
Hand-Winding
Case Material
Titanium
Case Width
34mm
Case Thickness
14.2mm
Lug Width
21mm
Crystal
Mineral
Bezel
Coin-Edge
Water Resistance
140m
Dial Color
Burgundy
Jewels
35j
Frequency
21,600 bph
Power Reserve
54 hours
Year
1971

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