Seiko Cal. 6157 - 107

The Seiko 6157-107 represents an important milestone in Seiko's 1973 lineup. Powered by the 6157 caliber with 17j jewels beating at 21,600 bph, it delivers a 67 hours power reserve. [seikata-wm-44b13b064a87]

Also known as: Sportsmatic, Baby Tuna

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

40mm

Case Thickness

15.2mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

150m

Dial Color

Navy

Jewels

17j

Frequency

21,600 bph

Power Reserve

67 hours

Year

1973

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