Seiko Cal. 5638 - 767

Seiko 5638-767

The 5638-767 is a sought-after Quartz piece from Seiko's golden era. Powered by the 5638 caliber with 32j jewels beating at 28,800 bph, it delivers a 53 hours power reserve. [seikata-wm-c396db2f9c9d]

Also known as: Goldfeather, Baby Tuna

Specifications

Movement
Quartz
Case Material
Two-Tone
Case Width
38mm
Case Thickness
14.9mm
Lug Width
21mm
Crystal
Hardlex
Bezel
Bidirectional
Water Resistance
150m
Dial Color
Champagne
Jewels
32j
Frequency
28,800 bph
Power Reserve
53 hours
Year
1983

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