Seiko Cal. 0740 - 985

Seiko 0740-985

The Seiko 0740-985 represents an important milestone in Seiko's 1978 lineup. Powered by the 0740 caliber with 29j jewels beating at 21,600 bph, it delivers a 46 hours power reserve. [seikata-wm-d648648dbe88]

Also known as: Tuna, Sportsmatic

Specifications

Movement
Kinetic
Case Material
Gold-Plated
Case Width
43mm
Case Thickness
10.2mm
Lug Width
19mm
Crystal
Acrylic
Bezel
Fixed
Water Resistance
30m
Dial Color
Black
Jewels
29j
Frequency
21,600 bph
Power Reserve
46 hours
Year
1978

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