Seiko Cal. 5638 - 229

Seiko 5638-229

The 5638-229 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 5638 caliber with 20j jewels beating at 36,000 bph, it delivers a 40 hours power reserve. [seikata-wm-828fd733ae25]

Also known as: World Timer, Baby Tuna

Specifications

Movement
Spring Drive
Case Material
PVD Black
Case Width
43mm
Case Thickness
13.4mm
Lug Width
19mm
Crystal
Acrylic
Bezel
Fixed
Water Resistance
170m
Dial Color
Champagne
Jewels
20j
Frequency
36,000 bph
Power Reserve
40 hours
Year
1985

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seikata-wm-828fd733ae25