Seiko Cal. 5638 - 108

Seiko 5638-108

Released in 1975, the Cal. 5638 with design code 108 was part of Seiko's domestic market collection. Powered by the 5638 caliber with 23j jewels beating at 36,000 bph, it delivers a 37 hours power reserve. [seikata-wm-ea7a3ad4147d]

Also known as: Sportsmatic, Golden Tuna

Specifications

Movement
Kinetic
Case Material
Titanium
Case Width
38mm
Case Thickness
10.5mm
Lug Width
18mm
Crystal
Hardlex
Bezel
Bidirectional
Water Resistance
40m
Dial Color
Blue Sunburst
Jewels
23j
Frequency
36,000 bph
Power Reserve
37 hours
Year
1975

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