Seiko Cal. 6687 - 416

Seiko 6687-416

The Seiko 6687-416 represents an important milestone in Seiko's 1977 lineup. Powered by the 6687 caliber with 28j jewels beating at 28,800 bph, it delivers a 36 hours power reserve. [seikata-wm-2b24168d774b]

Also known as: Sportsmatic, Golden Tuna

Specifications

Movement
Hand-Winding
Case Material
Titanium
Case Width
40mm
Case Thickness
12.9mm
Lug Width
21mm
Crystal
Hardlex
Bezel
Rotating
Water Resistance
110m
Dial Color
Champagne
Jewels
28j
Frequency
28,800 bph
Power Reserve
36 hours
Year
1977

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