Seiko Cal. 7091 - 372

Seiko 7091-372

The Seiko 7091-372 represents an important milestone in Seiko's 1971 lineup. Powered by the 7091 caliber with 34j jewels beating at 28,800 bph, it delivers a 58 hours power reserve. [seikata-wm-a75a8f504dd3]

Also known as: Monster, Tuna

Specifications

Movement
Hand-Winding
Case Material
Two-Tone
Case Width
39mm
Case Thickness
15.1mm
Lug Width
18mm
Crystal
Hardlex
Bezel
Fixed
Water Resistance
170m
Dial Color
Navy
Jewels
34j
Frequency
28,800 bph
Power Reserve
58 hours
Year
1971

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