Seiko Cal. 7112 - 840

Seiko 7112-840

The Seiko 7112-840 represents an important milestone in Seiko's 1975 lineup. Powered by the 7112 caliber with 29j jewels beating at 36,000 bph, it delivers a 42 hours power reserve. [seikata-wm-f10160686eff]

Also known as: Tuna, Sportsmatic

Specifications

Movement
Spring Drive
Case Material
Hardlex-Coated Steel
Case Width
46mm
Case Thickness
11.2mm
Lug Width
18mm
Crystal
Mineral
Bezel
Coin-Edge
Water Resistance
190m
Dial Color
White
Jewels
29j
Frequency
36,000 bph
Power Reserve
42 hours
Year
1975

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