Seiko Cal. 6138 - 492

Seiko 6138-492

The Seiko 6138-492 represents an important milestone in Seiko's 1976 lineup. Powered by the 6138 caliber with 21j jewels beating at 21,600 bph, it delivers a 36 hours power reserve. [seikata-wm-68326eacb3cf]

Also known as: Baby Tuna

Specifications

Movement
Hand-Winding
Case Material
PVD Black
Case Width
35mm
Case Thickness
13.5mm
Lug Width
19mm
Crystal
Sapphire
Bezel
Coin-Edge
Water Resistance
170m
Dial Color
Champagne
Jewels
21j
Frequency
21,600 bph
Power Reserve
36 hours
Year
1976

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