Seiko Cal. 4543 - 770

The Seiko 4543-770 represents an important milestone in Seiko's 1973 lineup. Powered by the 4543 caliber with 34j jewels beating at 36,000 bph, it delivers a 54 hours power reserve. [seikata-wm-d1c3614a0066]

Also known as: Bullhead

Specifications

Movement

Automatic

Case Material

Hardlex-Coated Steel

Case Width

37mm

Case Thickness

15.4mm

Lug Width

21mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

120m

Dial Color

Green

Jewels

34j

Frequency

36,000 bph

Power Reserve

54 hours

Year

1973

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