Seiko Cal. 7131 - 307

Seiko 7131-307

The Seiko 7131-307 represents an important milestone in Seiko's 1990 lineup. The Rotating bezel and 42mm case give it a distinctive presence on the wrist. [seikata-wm-b7798af2581a]

Also known as: Bullhead, Goldfeather

Specifications

Movement
Hand-Winding
Case Material
PVD Black
Case Width
42mm
Case Thickness
11.7mm
Lug Width
22mm
Crystal
Acrylic
Bezel
Rotating
Water Resistance
130m
Dial Color
Blue Sunburst
Jewels
27j
Frequency
36,000 bph
Power Reserve
49 hours
Year
1990

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