Seiko Cal. 4555 - 380

The Seiko 4555-380 represents an important milestone in Seiko's 1969 lineup. Powered by the 4555 caliber with 25j jewels beating at 36,000 bph, it delivers a 66 hours power reserve. [seikata-wm-895f36ec0c10]

Also known as: Helmet

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

46mm

Case Thickness

15.9mm

Lug Width

19mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

150m

Dial Color

Blue Sunburst

Jewels

25j

Frequency

36,000 bph

Power Reserve

66 hours

Year

1969

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