Seiko Cal. 7138 - 797

Seiko 7138-797

The 7138-797 is a sought-after Hand-Winding piece from Seiko's golden era. The Bidirectional bezel and 40mm case give it a distinctive presence on the wrist. [seikata-wm-518e21c67fa1]

Specifications

Movement
Hand-Winding
Case Material
Two-Tone
Case Width
40mm
Case Thickness
12.4mm
Lug Width
20mm
Crystal
Sapphire
Bezel
Bidirectional
Water Resistance
50m
Dial Color
Black
Jewels
35j
Frequency
21,600 bph
Power Reserve
49 hours
Year
1991

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