Seiko Cal. 4541 - 678

The Seiko 4541-678 represents an important milestone in Seiko's 1971 lineup. Powered by the 4541 caliber with 35j jewels beating at 28,800 bph, it delivers a 47 hours power reserve. [seikata-wm-f2ebf0590760]

Also known as: Helmet

Specifications

Movement

Quartz

Case Material

Gold-Plated

Case Width

44mm

Case Thickness

14.3mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

130m

Dial Color

Navy

Jewels

35j

Frequency

28,800 bph

Power Reserve

47 hours

Year

1971

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