Seiko Cal. 4521 - 548

This Solar model from 1973 features a 45mm Two-Tone case. Powered by the 4521 caliber with 23j jewels beating at 28,800 bph, it delivers a 57 hours power reserve. [seikata-wm-34fe02a2be88]

Specifications

Movement

Solar

Case Material

Two-Tone

Case Width

45mm

Case Thickness

15.1mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

60m

Dial Color

Cream

Jewels

23j

Frequency

28,800 bph

Power Reserve

57 hours

Year

1973

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