Seiko Cal. 4555 - 304

The Seiko 4555-304 represents an important milestone in Seiko's 1986 lineup. Powered by the 4555 caliber with 32j jewels beating at 21,600 bph, it delivers a 55 hours power reserve. [seikata-wm-589dd6f80361]

Also known as: Monster, Tuna

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

39mm

Case Thickness

12.3mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

70m

Dial Color

Cream

Jewels

32j

Frequency

21,600 bph

Power Reserve

55 hours

Year

1986

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