Seiko Cal. 4548 - 904

The Seiko 4548-904 represents an important milestone in Seiko's 1978 lineup. Powered by the 4548 caliber with 28j jewels beating at 21,600 bph, it delivers a 59 hours power reserve. [seikata-wm-8470c9ecb319]

Also known as: Bellmatic

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

35mm

Case Thickness

11.1mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

150m

Dial Color

Champagne

Jewels

28j

Frequency

21,600 bph

Power Reserve

59 hours

Year

1978

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