Seiko Cal. 4556 - 863

The Seiko 4556-863 represents an important milestone in Seiko's 1979 lineup. Powered by the 4556 caliber with 32j jewels beating at 36,000 bph, it delivers a 40 hours power reserve. [seikata-wm-edd1e7b80b0f]

Also known as: Rally, Baby Tuna

Specifications

Movement

Automatic

Case Material

Two-Tone

Case Width

37mm

Case Thickness

10.1mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

160m

Dial Color

Silver

Jewels

32j

Frequency

36,000 bph

Power Reserve

40 hours

Year

1979

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