Seiko Cal. 5687 - 137

Seiko 5687-137

The Seiko 5687-137 represents an important milestone in Seiko's 1978 lineup. Powered by the 5687 caliber with 18j jewels beating at 21,600 bph, it delivers a 41 hours power reserve. [seikata-wm-ec31dcfcef24]

Also known as: Turtle, Rally

Specifications

Movement
Solar
Case Material
Titanium
Case Width
39mm
Case Thickness
15.2mm
Lug Width
18mm
Crystal
Sapphire
Bezel
Coin-Edge
Water Resistance
130m
Dial Color
Champagne
Jewels
18j
Frequency
21,600 bph
Power Reserve
41 hours
Year
1978

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