Seiko Cal. 7136 - 991

Seiko 7136-991

The 7136-991 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 7136 caliber with 28j jewels beating at 28,800 bph, it delivers a 36 hours power reserve. [seikata-wm-cb571cdb1789]

Specifications

Movement
Spring Drive
Case Material
Hardlex-Coated Steel
Case Width
35mm
Case Thickness
15.4mm
Lug Width
20mm
Crystal
Mineral
Bezel
Coin-Edge
Water Resistance
80m
Dial Color
Black
Jewels
28j
Frequency
28,800 bph
Power Reserve
36 hours
Year
1965

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seikata-wm-cb571cdb1789