Seiko Cal. 4577 - 398

The Seiko 4577-398 represents an important milestone in Seiko's 1986 lineup. Powered by the 4577 caliber with 34j jewels beating at 21,600 bph, it delivers a 71 hours power reserve. [seikata-wm-6e5afb5bb9a9]

Also known as: Helmet

Specifications

Movement

Solar

Case Material

Stainless Steel

Case Width

35mm

Case Thickness

11.7mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

120m

Dial Color

Silver

Jewels

34j

Frequency

21,600 bph

Power Reserve

71 hours

Year

1986

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