Seiko Cal. 4543 - 737

The Seiko 4543-737 represents an important milestone in Seiko's 1970 lineup. The Bidirectional bezel and 46mm case give it a distinctive presence on the wrist. [seikata-wm-70da8797d4d6]

Also known as: Sumo, Flighty

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

46mm

Case Thickness

10.7mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

150m

Dial Color

White

Jewels

31j

Frequency

21,600 bph

Power Reserve

36 hours

Year

1970

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