Seiko Cal. 6642 - 680

Seiko 6642-680

The Seiko 6642-680 represents an important milestone in Seiko's 1978 lineup. Powered by the 6642 caliber with 17j jewels beating at 36,000 bph, it delivers a 54 hours power reserve. [seikata-wm-042f00e68cb3]

Also known as: Turtle, Bellmatic

Specifications

Movement
Hand-Winding
Case Material
Stainless Steel
Case Width
46mm
Case Thickness
13.8mm
Lug Width
22mm
Crystal
Acrylic
Bezel
Rotating
Water Resistance
150m
Dial Color
Blue Sunburst
Jewels
17j
Frequency
36,000 bph
Power Reserve
54 hours
Year
1978

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seikata-wm-042f00e68cb3