Seiko Cal. 7138 - 397

Seiko 7138-397

The 7138-397 is a sought-after Automatic piece from Seiko's golden era. Powered by the 7138 caliber with 31j jewels beating at 36,000 bph, it delivers a 57 hours power reserve. [seikata-wm-9c149fc1169e]

Also known as: Silverwave

Specifications

Movement
Automatic
Case Material
Gold-Plated
Case Width
41mm
Case Thickness
13.3mm
Lug Width
21mm
Crystal
Hardlex
Bezel
Coin-Edge
Water Resistance
110m
Dial Color
Green
Jewels
31j
Frequency
36,000 bph
Power Reserve
57 hours
Year
1969

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seikata-wm-9c149fc1169e