Seiko Cal. 7136 - 137

Seiko 7136-137

The Seiko 7136-137 represents an important milestone in Seiko's 1970 lineup. Powered by the 7136 caliber with 25j jewels beating at 21,600 bph, it delivers a 41 hours power reserve. [seikata-wm-0b707d65e2ea]

Also known as: Helmet, Golden Tuna

Specifications

Movement
Spring Drive
Case Material
Titanium
Case Width
34mm
Case Thickness
13.7mm
Lug Width
22mm
Crystal
Sapphire
Bezel
Coin-Edge
Water Resistance
80m
Dial Color
Champagne
Jewels
25j
Frequency
21,600 bph
Power Reserve
41 hours
Year
1970

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