Seiko Cal. 6163 - 271

The Seiko 6163-271 represents an important milestone in Seiko's 1978 lineup. Powered by the 6163 caliber with 17j jewels beating at 36,000 bph, it delivers a 51 hours power reserve. [seikata-wm-e307e1bd77f7]

Also known as: Tuna, Flighty

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

39mm

Case Thickness

10.3mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

50m

Dial Color

Green

Jewels

17j

Frequency

36,000 bph

Power Reserve

51 hours

Year

1978

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