Seiko Cal. 7136 - 640

Seiko 7136-640

The 7136-640 is a sought-after Automatic piece from Seiko's golden era. The Inner Rotating bezel and 40mm case give it a distinctive presence on the wrist. [seikata-wm-e9da7fdbe082]

Also known as: Monster, Baby Tuna

Specifications

Movement
Automatic
Case Material
Two-Tone
Case Width
40mm
Case Thickness
15.6mm
Lug Width
19mm
Crystal
Hardlex
Bezel
Inner Rotating
Water Resistance
170m
Dial Color
Cream
Jewels
32j
Frequency
36,000 bph
Power Reserve
43 hours
Year
1977

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