Seiko Cal. 5638 - 715

Seiko 5638-715

The Seiko 5638-715 represents an important milestone in Seiko's 1978 lineup. Powered by the 5638 caliber with 26j jewels beating at 28,800 bph, it delivers a 65 hours power reserve. [seikata-wm-11f239365450]

Also known as: Golden Tuna

Specifications

Movement
Automatic
Case Material
PVD Black
Case Width
36mm
Case Thickness
12.1mm
Lug Width
21mm
Crystal
Acrylic
Bezel
Coin-Edge
Water Resistance
80m
Dial Color
White
Jewels
26j
Frequency
28,800 bph
Power Reserve
65 hours
Year
1978

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seikata-wm-11f239365450