Seiko Cal. 6687 - 436

Seiko 6687-436

The Seiko 6687-436 represents an important milestone in Seiko's 1982 lineup. Powered by the 6687 caliber with 22j jewels beating at 28,800 bph, it delivers a 47 hours power reserve. [seikata-wm-a55a02afdc3e]

Also known as: Golden Tuna

Specifications

Movement
Automatic
Case Material
Titanium
Case Width
37mm
Case Thickness
14.3mm
Lug Width
19mm
Crystal
Acrylic
Bezel
Coin-Edge
Water Resistance
140m
Dial Color
Blue Sunburst
Jewels
22j
Frequency
28,800 bph
Power Reserve
47 hours
Year
1982

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