Seiko Cal. 4456 - 311

The Seiko 4456-311 represents an important milestone in Seiko's 1981 lineup. The Bidirectional bezel and 45mm case give it a distinctive presence on the wrist. [seikata-wm-7bf241e308b2]

Also known as: Sumo, Baby Tuna

Specifications

Movement

Quartz

Case Material

Hardlex-Coated Steel

Case Width

45mm

Case Thickness

13.3mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

140m

Dial Color

White

Jewels

36j

Frequency

28,800 bph

Power Reserve

37 hours

Year

1981

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